gas buoy

例句：

1. 1. The ship's captain ordered the gas buoy to be raised.
   船长命令升起气体浮标。
2. 2. The sailors used the gas buoy to guide them back to shore safely.
   水手们使用气体浮标安全地引导他们返回岸边。
3. 3. The gas buoy was a crucial part of the rescue operation.
   气体浮标是救援行动中至关重要的一部分。