life-preserver

常见例句

The life preserver kept him up until the boat came.
救生衣使他保持浮在水面直到小船来救他。
A life preserver shaped like a ring.
救生圈圈状救生用具
Dan: Surfboard? I need a life preserver!
丹：冲浪板？我需要一个救生圈。
PFD - Personal Flotation Device;a life preserver.
Position Finding Device,位置测定位，测位仪[器];
Every man's task is his life preserver.
维持一个人的生命事物，就是他的事业。
This is a life preserver.
这是救生用品。