life jacket造句
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.
救生衣使她浮在水上直到获救.