submarine cable buoy

例句：

1. 1.The submarine cable buoy is a crucial part of the underwater communication system.
   海底电缆浮标是水下通信系统的关键部分。
2. 2. The submarine cable buoy helps to maintain the stability of the ocean currents.
   海底电缆浮标有助于保持海洋流的稳定性。
3. 3. The submarine cable buoy was used to transmit important information during World War II.
   二战期间，海底电缆浮标被用来传输重要信息。