Recently, an unprecedented cold wave has swept across large parts of the United States, with temperatures in some areas plunging below minus 40 degrees Celsius—colder than certain regions of Antarctica. Triggered by a southward shift of the polar vortex, this deep freeze has prompted emergency declarations in multiple Midwestern and Northeastern states, leading to school closures, flight cancellations, and widespread power outages that severely disrupted daily life.International students in the U.S. have taken to social media, exclaiming, “It’s colder here than in Antarctica!” and “My eyelashes freeze within five minutes outside.” Many students from warmer climates say they’ve never experienced such extreme cold, noting that even their thickest down jackets offer little protection against the biting wind. In response, several universities have opened emergency warming centers and issued health advisories urging students to guard against frostbite and hypothermia.Meteorologists explain that while this extreme cold is a short-term event, it is linked to broader climate change patterns. Global warming can destabilize the polar vortex, making it more likely to spill frigid Arctic air into mid-latitude regions. Experts advise the public to monitor weather alerts, limit non-essential travel, and prepare emergency supplies. For international students, adapting to life abroad now includes coping with increasingly volatile weather—an unexpected but growing challenge of studying overseas.
近日，一场罕见的极寒天气席卷美国多地，部分地区气温骤降至零下40摄氏度以下，甚至比南极洲某些区域还要寒冷。这场寒潮由极地涡旋南下引发，导致中西部和东北部多个州发布紧急状态，学校停课、航班取消、电力中断，民众生活受到严重影响。在美留学生纷纷在社交媒体上感叹：“这天气比南极还冷！”“出门五分钟，睫毛就结冰。”许多来自温暖地区的学生表示，从未经历过如此严酷的低温，即便穿上最厚的羽绒服也难以抵御刺骨寒风。一些高校紧急开放临时避寒中心，并提醒学生注意防寒保暖，避免冻伤或失温。气象专家指出，此次极端低温虽属短期现象，但与全球气候变化密切相关。气候变暖可能导致极地涡旋不稳定，从而更频繁地向南侵袭中纬度地区。专家建议公众关注天气预警，合理安排出行，并做好应急准备。对于留学生而言，除了适应文化差异，如今还需应对愈发极端的自然环境，这也成为海外求学的新挑战之一。
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