water column
noun [ C ] environment specialized uk/ˈwɔː.tə ˌkɒl.əm/ us/ˈwɑː.t̬ɚ ˌkɑː.ləm/
水柱
a vertical section of water from the surface to the bottom of the sea, a lake, a river, etc.
The water column is a way of describing the different features found in seawater at different depths. 水柱是对海水中不同深度的不同特征进行表述的一种方式。