outfall ditch

• 排水沟

outfall ditch的用法和样例：

例句

1. Gutters lead the water into the ditch.
   排水沟把水排到这条水沟里。
2. Alongside each irrigation canal a drainage ditch was dug.
   沿着每一条灌溉渠，他们还挖了一条排水沟。