water catchment

• 汇水

water catchment的用法和样例：

例句

1. For catchment areas greater than gutter capacity, slotted holes can be installed.
   如果汇水面积大于天沟排水能力，可以在天沟底部打孔。
2. There are obvious differences in feldspar content between the north and south sides of the catchment area.
   汇水区南北的长石含量存在明显差异。