runner trough

例句：

1. 1. The farmer used to hoe the soil in the runner troughs.
   农民过去在运水沟里耕地。
2. 2.The team needs to clear the runner troughs before the game starts.
   比赛开始前，队伍需要清理运水沟。
3. 3. The old house had a small runner trough that ran along the side of the building.
   旧房子有一个沿着建筑侧面的小运水沟。