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Trends in Undergraduate WxChallenge Performance 大学生WxChallenge成绩的发展趋势
IF 2.2 4区 地球科学 Q3 ENVIRONMENTAL STUDIES Pub Date : 2023-05-16 DOI: 10.1175/wcas-d-22-0102.1
Nicholas J. Eckstein, Nathan M. Hitchens, Petra A. Zimmermann
The WxChallenge is a national forecasting competition in which participants at colleges and universities across North America attempt to accurately predict daily high and low temperatures, maximum wind speed, and precipitation accumulation at a variety of locations each year. Undergraduate students make up the majority of participants. In this study we observed trends from 11 seasons of WxChallenge data and related them to existing literature on local forecasting contests. Normalized scores were calculated each day for any participant that submitted a forecast. On average, undergraduate scores improved with continued participation in the contest. Significant gains are made during their first year by forecasters who participated for multiple years. While duration of participation in the contest plays a role, significant improvements in performance were also noted with higher academic standing, potentially due to forecasting experience gained through other curricular or extracurricular activities.
WxChallenge是一项全国性的预测比赛,北美各地学院和大学的参与者试图准确预测每年不同地点的每日高温和低温、最大风速和降水量。本科生占大多数。在这项研究中,我们观察了WxChallenge数据的11个季节的趋势,并将其与当地预测竞赛的现有文献联系起来。对于提交预测的任何参与者,每天都会计算归一化分数。平均而言,本科生的成绩随着比赛的继续而提高。多年来参与预测的预测者在第一年取得了重大进展。虽然参加比赛的持续时间起到了一定作用,但随着学术地位的提高,成绩也有了显著改善,这可能是因为预测了通过其他课程或课外活动获得的经验。
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引用次数: 0
Trial by Fire: Support for Mitigation and Adaptation Policy after the 2020 Oregon Wildfires 火灾试验:支持2020年俄勒冈州野火后的缓解和适应政策
IF 2.2 4区 地球科学 Q3 ENVIRONMENTAL STUDIES Pub Date : 2023-05-05 DOI: 10.1175/wcas-d-22-0075.1
Leanne S. Giordono, Muhammad Usman Amin Siddiqi, Gregory Stelmach, Chad Zanocco, June Flora, Hilary S. Boudet
The September 2020 Oregon wildfires were unprecedented in terms of their geographic scope and the number of communities affected by smoke and wildfire. Though it is difficult to directly attribute the event to climate change, scientists have noted the strong connection between warmer and drier conditions in the Western U.S. – conditions that are linked to climate change – and increasing wildfire risk. These wildfires thus had the potential to act as a “focusing event,” potentially strengthening public support for climate change policy. Political ideology is a well-known driver of public support for climate change mitigation policies in the U.S., but few studies have examined adaptation policy support. Moreover, other factors shaping post-event support for the two “pillars” of climate change policy—adaptation and mitigation—have rarely been compared. We conducted a survey of Oregonians within 6 months of the 2020 wildfires (n=1,308) to understand post-event support for climate mitigation and adaptation policies. We found that the magnitude of the association between political ideology and policy support was lower for adaptation policies than mitigation policy and there was no association with support for forest management changes. In contrast, selected socio-demographic characteristics played a more important role in support for selected adaptation policies than mitigation policy.
2020年9月俄勒冈州的野火在地理范围和受烟雾和野火影响的社区数量方面都是前所未有的。尽管很难将这一事件直接归因于气候变化,但科学家们注意到,美国西部的温暖和干燥条件——与气候变化有关的条件——与野火风险的增加之间存在着密切联系。因此,这些野火有可能成为“焦点事件”,有可能加强公众对气候变化政策的支持。政治意识形态是美国公众支持气候变化缓解政策的一个众所周知的驱动因素,但很少有研究考察适应政策的支持。此外,影响事后支持气候变化政策的两个“支柱”——适应和缓解——的其他因素很少被比较。我们在2020年野火发生后的6个月内对俄勒冈人进行了一项调查(n=1308),以了解事件后对气候缓解和适应政策的支持。我们发现,政治意识形态与适应政策的政策支持之间的关联程度低于缓解政策,而且与支持森林管理改革没有关联。相比之下,选定的社会人口特征在支持选定的适应政策方面比缓解政策发挥了更重要的作用。
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引用次数: 1
Climate change impacts on subsistence paddy farming in Indian East Coast: A Geospatial and Community Perception Assessment 气候变化对印度东海岸自给水稻种植的影响:地理空间和社区感知评估
IF 2.2 4区 地球科学 Q3 ENVIRONMENTAL STUDIES Pub Date : 2023-04-19 DOI: 10.1175/wcas-d-21-0175.1
Anirban Kundu, Sayani Mukhopadhyay, P. Basu
Impact of climate change on subsistence agriculture is a major concern in the developing world. The vulnerability of the coastal regions to climate change has been highlighted in particular. The present study assessed the impact of climate change on subsistence rice farming in Eastern Indian coast using an integrated approach of statistical trend analysis by Mann Kendall’s Test and Sen’s Slope Estimation of climate data, remote sense-based land cover analyses using Normalized Difference Vegetation Index (NDVI), Normalized Difference Water Index (NDWI) and Land Surface Temperature (LST) complemented by questionnaire-based perception survey among the farming community. There has been noticeable change in both ambient temperature and LST in the region. Delayed arrival of monsoon critically impacts the cropping calendar. The crop harvest season has shifted further into a time of the year that is prone to weather extremes. Analyses of NDVI and NDWI also indicate shift in cropping calendar. Over years, there was increasing degree of negative correlation between LST and NDVI in November which indicates increasing water stress for crops in that time juncture. This may further cause crop sterility and yield loss. The study also reveals large scale conversion of paddy growing agricultural land into prawn aquaculture ponds. Farmers attributed such landuse change to cultivation stress caused by delayed monsoon and consequent crop loss from weather extremes and changes in crop agronomic conditions. Farmers also report increased pest attack and attribute that to increasing temperature regime.
气候变化对自给农业的影响是发展中国家关注的一个主要问题。沿海地区对气候变化的脆弱性尤其受到强调。本研究采用Mann Kendall检验和Sen斜率估算的综合统计趋势分析方法,利用归一化植被指数(NDVI)、归一化差异水指数(NDWI)和地表温度(LST)进行基于遥感的土地覆盖分析,并结合基于问卷的农业社区感知调查,评估了气候变化对印度东部沿海稻作的影响。该地区的环境温度和地表温度都有明显的变化。季风的延迟到来严重影响了种植日历。农作物收获季节已经进一步转移到一年中容易出现极端天气的时间。NDVI和NDWI的分析也表明了种植历的变化。从历年来看,11月LST与NDVI的负相关程度呈增加趋势,表明作物在该时段的水分胁迫增加。这可能进一步造成作物不育和产量损失。该研究还揭示了水稻种植农田大规模转化为对虾养殖池塘。农民将这种土地利用变化归因于季风延迟造成的种植压力,以及极端天气和作物农艺条件变化造成的作物损失。农民还报告虫害增加,并将其归因于气温升高。
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引用次数: 0
Lives Saved vs Time Lost: Direct Societal Benefits of Probabilistic Tornado Warnings 挽救的生命与损失的时间:概率龙卷风警报的直接社会效益
IF 2.2 4区 地球科学 Q3 ENVIRONMENTAL STUDIES Pub Date : 2023-04-17 DOI: 10.1175/wcas-d-22-0139.1
A. Ugarov
National Weather Service is planning to implement the system of probabilistic tornado warnings. In this paper, we estimate and compare full societal costs of tornadoes with existing deterministic and potential probabilistic warnings. These full costs include the value of statistical lives lost as well as the value of the time spent sheltering. We find that probabilistic tornado warnings would decrease total expected fatalities. The improvement in decision-making would also decrease the total opportunity cost of time spent sheltering even though the total sheltering time is likely to increase. In total, probabilistic warnings should lower societal costs of tornadoes relative to deterministic warnings by approximately $76-139 million per year with a large portion of this improvement coming from lower casualties.
国家气象局计划实施龙卷风概率预警系统。在本文中,我们估计和比较了龙卷风与现有的确定性和潜在的概率预警的全部社会成本。这些全部费用包括统计上损失的生命的价值以及用于避难的时间的价值。我们发现,概率龙卷风预警会降低总预期死亡人数。决策的改进也会减少避难时间的总机会成本,尽管避难总时间可能会增加。总的来说,与确定性预警相比,概率预警每年可以降低龙卷风造成的社会成本约为7600万至1.39亿美元,其中很大一部分改善来自于人员伤亡的减少。
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引用次数: 0
User selection and engagement for climate services co-production 气候服务联合制作的用户选择和参与
IF 2.2 4区 地球科学 Q3 ENVIRONMENTAL STUDIES Pub Date : 2023-04-07 DOI: 10.1175/wcas-d-22-0112.1
E. Baulenas, D. Bojovic, D. Urquiza, M. Terrado, S. Pickard, N. Gonzalez, A. L. St.Clair
Climate services are high in the international agenda for their potential to help combat the effects of climate change. However, climate science is rarely directly incorporated in the decision-making processes of societal actors, due to what has been identified as the usability gap. The cause behind this gap is partially due to a failure to timely and meaningfully engage users in the production of climate services, as well as misperceptions on which users can best benefit from climate service uptake. In this article we propose user selection and engagement guidelines that integrate important values from participatory science such as those of legitimacy, representativity and agency. The guidelines consist of 5 + 1 steps: defining the why, where, whom, which attributes, which intensity, and how to select and engage with stakeholders. Whilst these steps may be initially implemented by an ideally interdisciplinary team of scientists and service designers, the final step consists of an iterative process by which each decision is agreed together with the identified users and stakeholders under a co-production approach. We believe this systematic user selection and engagement practice is key to support the design of climate services aligned to the actual needs of a wide and inclusive range of empowered societal agents.
气候服务因其帮助应对气候变化影响的潜力而在国际议程中占据重要地位。然而,由于可用性差距,气候科学很少被直接纳入社会行为者的决策过程。造成这一差距的部分原因是未能及时和有意义地让用户参与到气候服务的生产中来,以及对哪些用户可以从气候服务的吸收中获得最大利益存在误解。在本文中,我们提出了用户选择和参与指南,这些指南整合了参与科学的重要价值,如合法性、代表性和代理。该指南由5 + 1步骤组成:定义为什么,在哪里,谁,哪些属性,哪些强度,以及如何选择和参与利益相关者。虽然这些步骤最初可能由科学家和服务设计师组成的理想跨学科团队实施,但最后一步包括一个迭代过程,通过该过程,每个决策都在共同生产的方法下与确定的用户和利益相关者一起达成一致。我们认为,这种系统的用户选择和参与实践是支持气候服务设计的关键,这些服务与广泛而包容的社会主体的实际需求相一致。
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引用次数: 1
Visualizing Uncertainty in Hurricane Forecasts with Animated Risk Trajectories 用动画风险轨迹可视化飓风预报中的不确定性
IF 2.2 4区 地球科学 Q3 ENVIRONMENTAL STUDIES Pub Date : 2023-04-06 DOI: 10.1175/wcas-d-21-0173.1
J. Witt, Z. Labe, Amelia C Warden, Benjamin A. Clegg
Hurricane forecasts are often communicated through visualizations depicting the possible future track of the storm. The Cone of Uncertainty (COU) is a commonly used visualization, but the graphic is prone to misinterpretation such as thinking only locations contained within the cone’s boundary are at risk. In this study, we investigated the utility of conveying hurricane forecast tracks using a set of animated icons, each representing an instance of a possible storm path. We refer to this new visualization as Animated Risk Trajectories (ARTs). We measured non-experts’ perception of risk when viewing simplified, hypothetical hurricane forecasts presented as ARTs or COUs. To measure perception of risk for each visualization type, we designed experiments to have participants make decisions to evacuate individual towns at varying distances from the most likely forecast path of a storm. The ARTs led to greater risk perception in areas that fell beyond the cone’s boundaries. Non-experts’ interpretation of risk was impacted by the visual properties of the ARTs, such as the distribution of the icons, including their density and whether the distribution was unimodal or bimodal. This supports the suggestion that ARTs can have value in communicating spatial-temporal uncertainty.
飓风预报通常通过描绘风暴未来可能轨迹的可视化来传达。不确定性圆锥体(COU)是一种常用的可视化方法,但图形很容易被误解,例如认为只有圆锥体边界内的位置才有风险。在这项研究中,我们研究了使用一组动画图标传达飓风预报轨迹的效用,每个图标都代表一个可能的风暴路径实例。我们将这种新的可视化称为动画风险轨迹(ARTs)。我们在查看以ARTs或COU表示的简化假设飓风预报时,测量了非专家对风险的感知。为了测量每种可视化类型的风险感知,我们设计了实验,让参与者决定疏散距离最有可能预测的风暴路径不同距离的各个城镇。ARTs在锥体边界以外的区域导致了更大的风险感知。非专家对风险的解释受到ART的视觉特性的影响,例如图标的分布,包括其密度,以及分布是单峰还是双峰。这支持了ARTs在传达时空不确定性方面具有价值的说法。
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引用次数: 0
Spring snowpack influences in the volume and timing of spring and peak season overnight visitation to Yosemite Wilderness 春季积雪影响了春季和旺季夜间参观约塞米蒂荒野的数量和时间
IF 2.2 4区 地球科学 Q3 ENVIRONMENTAL STUDIES Pub Date : 2023-04-05 DOI: 10.1175/wcas-d-22-0099.1
Wilderness visitation, particularly overnight use, is reactive to climate variability as backpackers face greater exposure to and dependence on environmental conditions. This study examines the effect that spring snowpack has on the timing and volume of permits issued for overnight use of the Yosemite Wilderness during peak and shoulder season months (April-October) from 2002-2019. We categorize April 1st snowpack at Tuolumne Meadows into snow drought (<75%), high snowpack (>125%), and near average snowpack (75-125%). Results confirm Wilderness-wide differences between snowpack categories, including change in spring overnight visitors (April-June: +20% snow drought, −28% high snowpack). Our findings confirm that snow drought allows for more access to high elevation trailheads when seasonal roads are open earlier in spring (May-June: +74% Tioga Road, +81% Tuolumne Meadows). Mid-to-high elevation trailheads experience a sustained increase in use during high snowpack years (June-October: +12% Yosemite Valley and Big Oak Flat, +15% Glacier Point Road and Wawona; +32% Hetch Hetchy) as a narrower seasonal access window leads to filled permit quotas in the high country and displaces use to lower elevation trailheads. These findings have implications for wilderness stewards, including biophysical and experiential impacts to wilderness character from earlier and longer seasons, especially at higher elevation and fragile alpine and sub-alpine areas, as snow drought in mountain protected areas becomes more common. Recommendations to address greater early season use and its attendant impacts include adaptively managing permits for different types of snowpack years, including potential changes in the number, timing, and destination of select trailhead quotas.
野外旅游,特别是夜间旅游,是对气候变化的反应,因为背包客面临更多的暴露和依赖于环境条件。本研究调查了2002-2019年旺季和平季(4月至10月)期间,春季积雪对优胜美地荒野夜间使用许可证发放的时间和数量的影响。我们将4月1日Tuolumne Meadows的积雪分为雪干旱(125%)和接近平均积雪(75-125%)。结果证实了荒野范围内积雪类别之间的差异,包括春季过夜游客的变化(4 - 6月:+20%雪旱,- 28%高积雪)。我们的研究结果证实,当季节性道路在春季早些时候开放时,雪旱允许更多的人进入高海拔的小径起点(5月至6月:+74%的泰奥加路,+81%的图勒姆草地)。在高积雪年份,中高海拔步道的使用率持续增加(6月至10月:约塞米蒂山谷和大橡树平原+12%,冰川点路和瓦沃纳+15%;+32% Hetch Hetchy),因为季节性通道窗口较窄,导致高海拔地区的许可证配额被填满,并取代了使用较低海拔的小径。这些发现对荒野管理具有启示意义,包括更早和更长的季节对荒野特征的生物物理和经验影响,特别是在高海拔和脆弱的高山和亚高山地区,因为山区保护区的雪旱变得更加普遍。为解决更多的早期使用季节及其随之而来的影响,建议包括适应性地管理不同类型积雪年的许可证,包括选择小径配额的数量、时间和目的地的潜在变化。
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引用次数: 1
Climate Change, Fish Production, and Maritime Piracy 气候变化、鱼类生产和海上海盗
IF 2.2 4区 地球科学 Q3 ENVIRONMENTAL STUDIES Pub Date : 2023-04-01 DOI: 10.1175/wcas-d-21-0147.1
Bo Jiang, G. LaFree
Contemporary social science has produced little research on connections between climate change and crime. Nonetheless, much prior research suggests that economic insecurity may affect individual calculations of the cost and benefit of engaging in criminal behavior, and climate change is likely to have important economic consequences for professions like fishing that depend directly on the environment. In this paper, we test the possibility that climate change affects participation in maritime piracy, depending on the specific ways that it impacts regional fish production. Our analysis is based on piracy in East Africa and the South China Sea. These two regions are strategic in that both areas have experienced a large amount of piracy; however, rising sea temperatures have been associated with declines in fish production in East Africa but increases in the South China Sea. We treat sea surface temperature as an instrument for fish output and find that in East Africa higher sea surface temperature is associated with declining fish production, which in turn increases the risk of piracy, whereas in the South China Sea higher sea surface temperature is associated with increasing fish production, which in turn decreases the risk of piracy. Our results also show that decreases in fish production bring about a larger number of successful piracy attacks in East Africa and that increases in fish production are associated with fewer successful attacks in the South China Sea. We discuss the theoretical and policy implications of the findings and point out that as climate change continues, its impact on specific crimes will likely be complex, with increases and decreases depending on context.There is little evidence on the effect of climate change on criminal behavior. This study seeks to quantify the impact of a specific type of climate change—rising sea temperature—on maritime piracy, a type of crime that is linked exclusively to the ocean. The risk of piracy attacks and the probability of successful attacks are higher with declines in fish production in East Africa and lower with increases in fish production in the South China Sea. These results suggest that climate change does affect maritime piracy rates and that its effect depends on the specific situational context and the rational choices that changing sea temperatures generate.
当代社会科学很少对气候变化和犯罪之间的联系进行研究。尽管如此,许多先前的研究表明,经济不安全可能会影响个人对从事犯罪行为的成本和收益的计算,而气候变化可能会对直接依赖环境的渔业等职业产生重要的经济后果。在这篇论文中,我们测试了气候变化影响参与海盗活动的可能性,这取决于它影响区域鱼类生产的具体方式。我们的分析是基于东非和南中国海的海盗行为。这两个区域具有战略意义,因为这两个地区都经历了大量的海盗活动;然而,海水温度的升高与东非鱼类产量的下降有关,但与南中国海的增加有关。我们将海面温度视为衡量鱼类产量的工具,发现在东非,海面温度升高与鱼类产量下降有关,这反过来又增加了海盗的风险,而在南中国海,海面温度较高与鱼类产量增加有关,这又降低了海盗的危险。我们的研究结果还表明,鱼类产量的减少导致东非海盗袭击的成功次数增加,而鱼类产量的增加与南中国海海盗袭击的失败次数减少有关。我们讨论了研究结果的理论和政策含义,并指出,随着气候变化的持续,其对特定犯罪的影响可能会很复杂,根据具体情况而增加和减少。关于气候变化对犯罪行为的影响,几乎没有证据。这项研究试图量化一种特定类型的气候变化——海水温度上升——对海盗行为的影响,海盗行为是一种完全与海洋有关的犯罪。海盗袭击的风险和成功袭击的概率随着东非鱼类产量的下降而增加,而随着南中国海鱼类产量的增加而降低。这些结果表明,气候变化确实会影响海盗率,其影响取决于具体的环境和不断变化的海洋温度所产生的合理选择。
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引用次数: 0
“I'm fixing a hole where the rain gets in, and stops my mind from wandering”: approaching sustainable climate change adaptations “我正在修复一个雨水进入的洞,让我的思想不再游荡”:接近可持续的气候变化适应
IF 2.2 4区 地球科学 Q3 ENVIRONMENTAL STUDIES Pub Date : 2023-03-27 DOI: 10.1175/wcas-d-22-0113.1
C. Aall, Christiane Meyer-Habighorst, Irmelin Gram-Hanssen, Mari Hanssen Korsbrekke, G. Hovelsrud
Sustainable development is a challenging field of research, colored by the paradoxes of modernity and development, and the tradeoffs involved in balancing the ‘sustainable’ and ‘development’ side of the various sustainable development goals. We must take these overarching challenges into account when entering a more specific discussion of what a concept of sustainable climate change adaptation may entail. This article reviews the history of this concept, including insights provided by the 10 recent publications in a special collection of WCAS on the topic of sustainable climate change adaptation. This collection reflects on why and how the term sustainable development should be included in our understandings of and efforts towards climate change adaptation and proposes a preliminary framework for distinguishing between conventional and sustainable adaptation.
可持续发展是一个具有挑战性的研究领域,充满了现代性和发展的悖论,以及在平衡各种可持续发展目标的“可持续”和“发展”方面所涉及的权衡。在就可持续气候变化适应概念可能涉及的内容进行更具体的讨论时,我们必须考虑到这些总体挑战。本文回顾了这一概念的历史,包括世界气候变化大会关于可持续气候变化适应专题的10份最新出版物提供的见解。本汇编反映了为什么以及如何将可持续发展一词纳入我们对气候变化适应的理解和努力,并提出了区分传统适应和可持续适应的初步框架。
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引用次数: 0
Communicating about Extreme Heat: Results from Card Sorting and Think Aloud Interviews with Experts from Differing Domains 关于极端高温的交流:来自不同领域专家的卡片分类和思考访谈的结果
IF 2.2 4区 地球科学 Q3 ENVIRONMENTAL STUDIES Pub Date : 2023-03-22 DOI: 10.1175/wcas-d-22-0108.1
Jeannette Sutton, Nicholas Waugh, Savannah Olivas
Climate trends indicate that extreme heat events are becoming more common and more severe over time, requiring improved strategies to communicate heat risk and protective actions. However, there exists a disconnect in heat-related communication from experts, who commonly include heat related jargon (i.e., technical language), to decision makers and the general public. The use of jargon has been shown to reduce meaningful engagement with and understanding of messages written by experts. Translating technical language into comprehensible messages that encourage decision makers to take action has been identified as a priority to enable impact-based decision support. Knowing what concepts and terms are perceived as jargon, and why, is a first step to increasing communication effectiveness. With this in mind, we focus on the mental models about extreme heat among two groups of domain experts –those trained in atmospheric science and those trained in emergency management to identify how each group understands terms and concepts about extreme heat. We use a hybrid data collection method of open card sorting and think-aloud interviews to identify how participants conceptualize and categorize terms and concepts related to extreme heat. While we find few differences within the sorted categories, we learn that the processes leading to decisions about the importance of including, or not including, technical information differs by group. The results lead to recommendations and priorities for communicating about extreme heat.
气候趋势表明,随着时间的推移,极端高温事件变得越来越普遍和严重,需要改进沟通高温风险和保护行动的策略。然而,在与热相关的沟通中,专家与决策者和公众之间存在脱节,专家通常包括与热相关术语(即技术语言)。事实证明,使用行话会减少对专家所写信息的有意义的参与和理解。将技术语言转化为可理解的信息,鼓励决策者采取行动,已被确定为实现基于影响的决策支持的优先事项。了解哪些概念和术语被认为是行话,以及为什么,是提高沟通效率的第一步。考虑到这一点,我们将重点关注两组领域专家关于极端高温的心理模型——接受过大气科学培训的专家和接受过应急管理培训的专家,以确定每组专家如何理解极端高温的术语和概念。我们使用开放式卡片排序和大声思考访谈的混合数据收集方法来确定参与者如何对与酷热相关的术语和概念进行概念化和分类。虽然我们在分类中发现了一些差异,但我们了解到,导致决定是否包括技术信息的重要性的过程因组而异。研究结果提出了关于极端高温的建议和优先事项。
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引用次数: 0
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