life buoy

汉语翻译

英语解释：

名词 life buoy:

1. a life preserver in the form of a ring of buoyant material
   同义词：lifesaver, life belt, life ring

例句：

1. I threw a life buoy to him when I saw his struggling.
   看到他在挣扎，我给他扔了一个救生圈过去。