bottom sea waters

• 近底层海水

bottom sea waters的用法和样例：

例句

1. The algae helped to oxygenate the bottom waters, and the mussels filtered the seawater, thereby maintaining good light conditions for photosynthesis.
   海藻有助于底层海水的充氧，贝类则可过滤海水，维持海水良好的透光度，有益光合作用的进行。