underwater

形容词 underwater:

1. beneath the surface of the water
   同义词：submerged, submersed
2. growing or remaining under water
   同义词：subaqueous, subaquatic, submerged, submersed

1. A trademark used for an underwater breathing apparatus.
   水肺，水中呼吸器用于水下呼吸装备的一种商标
2. A ship equipped for laying explosive underwater mines.
   布雷舰艇装备有布水雷装置的舰艇
3. This machine has been specially adapted for use underwater.
   这机器是为水下使用而特别改装的。
4. This machine has been specially adapted for underwater use.
   这机器是为水下使用而特别改装的。