名词
中文翻译：救生带
同义词：
['life jacket', 'life jacket', 'life vest']
例句：
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1.The lifebelt should be worn around the waist.
救生带应该系在腰间。
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2.She wore a lifebelt during the earthquake.
她在地震中佩戴了救生带。
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3.The lifebelt is designed to keep you safe in case of an emergency.
救生带设计用来在紧急情况下保护你安全。