Clough

例句：

1. 1. The farmer has dug a new ditch to divert the water.
   农民挖了一条新沟渠来引导水流。
2. 2.The river flows through several channels before reaching the sea.
   河流穿过几个渠道，最后流入大海。
3. 3. The engineer designed a ravine for flood control.
   工程师设计了一个峡谷用于防洪。