点击下方单词,选择对的这个单词
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1. 救生衣A life jacket is a sleeveless jacket which helps you to float when you have fallen into deep water.
1. life preserver consisting of a sleeveless jacket of buoyant or inflatable design
Synonym: life vestcork jacket
多通过句子记忆单词，而不是单独死记硬背。
