life vest 的音标为英 [laɪf vest]、美 [laɪf vest]，中文翻译为“救生衣”，指一种无袖的浮力外套，通常由 buoyant（浮力材料）或 inflatable（可充气）材质制成，用于帮助人在水中保持漂浮状态。它是水上活动中的重要安全装备，常见于船舶、飞机、救生艇等场景。

用法示例

作为名词，life vest 可直接作主语或宾语，常与“wear”“put on”“store”等动词搭配使用。

例句

Your life vest is stored under your seat.（救生衣就在你的座位底下。）

You must wear a life vest when boating on the lake.

The crew demonstrated how to inflate the life vest during the safety briefing.

She grabbed the life vest and jumped into the water to save the drowning child.

The airline requires all passengers to locate their life vest before takeoff.

The life vest kept him afloat until the rescue team arrived.

Children should wear a properly fitted life vest at all times near the pool.

The old life vest had lost its buoyancy and needed to be replaced.

He forgot to put on his life vest and struggled to stay above water.

The coast guard inspected each boat to ensure life vests were available for all passengers.

短语搭配

wear a life vest（穿救生衣）

inflatable life vest（充气式救生衣）

buoyant life vest（浮力救生衣）

life vest storage（救生衣存放处）

life vest safety instructions（救生衣安全说明）

近义词

life jacket（救生衣）、cork jacket（软木救生衣）。三者在含义上几乎一致，但“life jacket”更为常用，而“cork jacket”特指以软木为浮力材料的旧式救生衣。

无论是海上作业、航空旅行还是水上运动，正确使用 life vest 都是保障生命安全的关键。你是否在乘坐交通工具或参与水上活动时注意过救生衣的存放位置和使用方法？