 |
| Chinese | English |
| 集水区；下游区 | catchment area 1. An area from which surface runoff is carried away by a single drainage system. 2. The area of land bounded by watersheds draining into a river, basin or reservoir (1. 一个区域，从那里通过一条排水系统来排放地面径流。 2. 通过分水线来界定的地域，排放到河里、内港或水库。) |