life preserver造句

1、a life preserver in the form of a ring of buoyant material.
圆圈形的有浮力生命保护者。

2、a life preserver in the form of a ring of buoyant material
圆圈形的有浮力的生命保护者。

3、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。

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life preserver造句 单词乎
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