runoff generatingrain

例句：

1. 1. The rainwater fromthe roof runs off into the gutter.
   屋顶的雨水顺着排水沟流下来。
2. 2. Theriver overflowed its banks during theflood.
   洪水期间，河流溢出了河岸。
3. 3.The soil was seeping with moisture afterthe heavy rain.
   大雨过后，土壤湿润得渗出水来。