英语词汇“flotation device”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	flotation device
释义	flotation device noun An object used to provide or maintain buoyancy in water: all who remain missing are believed to be wearing flotation devices... Everyone on board must wear a personal floatation device. Previously such boats were required only to carry flotation devices. They're swimming in the deep end without any floatation devices.
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