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.
随便看	netherworld Nethinim net importer netiquette netizen net-layer net maker net metering netminder netminding net national product net net net neutrality netop net plankton net-play net player net practice net present value net-priced net profit net reproduction rate netroots net-rope Netscape

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