aquaphone

例句：

1. 1. The aquaphone was used to communicate with the submarine during the war.
   在战争期间，这个水声电话被用来与潜艇进行通信。
2. 2.The researchers developed an aquaphone that could detect underwater sounds.
   研究人员开发了一种水声电话，可以探测水下声音。
3. 3.In the movie, the protagonist uses an aquaphone to locate his lost friend in the depths of the ocean.
   电影中的主角使用水声电话来定位他丢失的朋友，在海洋深处。