n.救生衣...

life jacket的复数形式为：life jackets...

life jacket的音标：life jacket的英式发音音标为：[laif 'dʒækit]life jacket的美式发音音标为：[laɪf 'dʒækɪt]...

Inflate your life jacket by pulling sharply on the cord.猛拽绳扣使你的救生衣充气。When it returns to shore, the life-jacket will deflate and revert to a harness.返回岸上后，救生衣就会瘪掉，恢复成背带状。The life jacket buoyed her up until help arrived.救生...