单词 | 通常是圈状 |
例句 | DEFINITIVE EXAMPLES 权威例句〔life preserver〕A buoyant device, usually in the shape of a ring, belt, or jacket, designed to keep a person afloat in the water.救生用具:一种有浮力的装置,通常是圈状、带状或夹克衫状,用途是使人能浮在水中美国传统 |
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