floatation jacket

• 救生背心,救生衣

floatation jacket的用法和样例：

例句

1. Everyone wears a life jacket while kayaking.
   划独木舟的时候，每个人都会穿一件救生衣。
2. Inflate your life jacket by pulling sharply on the cord.
   猛拽绳扣使你的救生衣充气。