名词排水区，下游区

1. 集水区：TSI<40为贫养状态,汇注河流的水源,通常包括地表水和地下水,分别形成地面集水区(catchment area)和地下集水区. 河盆的自然地理条件,在很大程度上决定著地表径流的形成过程、汇水过程和河水流动的情况等. 热能主要通过蒸发及蒸腾作用,

2. 集水区;集水范围;集水面积：catchment 集水区;顾客来源区;载客范围(公共交通工具) | catchment area 集水区;集水范围;集水面积 | catchment channel 引水道

3. 汇水面积：Distribution system 配水系统 | Catchment area 汇水面积 | Open channel 明渠

4. 集水面积：catch basin 集水槽 | catchment area 集水面积 | catenary 悬链线

1. (学校的)招生地区;(医院等的)服务地区
    The catchment area of a school, hospital, or other service is the area that it serves.

    e.g. ...the catchment areas of the district general hospitals.
           地区综合医院的服务范围

2. (地理学上河流的)集水区域，汇水面积
    In geography, the catchment area of a river is the area of land from which water flows into the river.

noun

1. the entire geographical area drained by a river and its tributaries
    an area characterized by all runoff being conveyed to the same outlet

    e.g. flood control in the Missouri basin

    Synonym: river basinbasinwatersheddrainage basincatchment basindrainage area