subtidal

例句：

1. 1.The subtidal zone is where the water is not moving at all.
   亚潮区是水完全不流动的地方。
2. 2. The subtidal currents are responsible for the movement of the ocean floor.
   亚潮流负责海洋底部的运动。
3. 3. The subtidal ecosystem is home to a variety of marine life.
   亚潮生态系统是各种海洋生物的家园。