柯林斯詞典life preserver (life preservers) 1. N-COUNT A life preserver is something such as a jacket, belt or ring, which helps you to float when you have fallen into deep water. 救生用具[美國英語] 返回 life preserver劍橋詞典a lifebelt or life jacket 救生圈或救生衣，救生背心（同 lifebelt 或 life jacket） 返回 life preserver