catchment

n. 排水区, 集水, 流域

catch.ment

n.（名词）
A catching or collecting of water, especially rainwater.
集水：集水，尤指雨水的汇集收集


A structure, such as a basin or reservoir, used for collecting or draining water.
贮水池：一种用于收集或疏导水的装置，如盆或贮水容器
The amount of water collected in such structure.
蓄水量：在此种容器中的水的收集量
A catchment area.
流域