详细解释:n. 排水区, 集水, 流域
英语解释：
名词 catchment:
a structure in which water is collected详细解释：
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