名词
中文翻译：冷却或加热夹克
同义词：
['cooling vest', 'heating vest例句：1. She wore a cooling vest during the hot summer days.（在炎热的夏天，她穿着一件冷却背心。）']
例句：
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1. She wore a cooling vest during the hot summer days.
在炎热的夏天，她穿着一件冷却背心。
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2. The engineer decided to wear a heating vest for extra warmth.
工程师决定穿一件保暖背心以增加体温。
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3. The firefighters used cooling vests to keep themselves cool in the intense heat.
消防员们使用冷却背心来在高温下保持凉爽。