trench excavated

例句：

1. 1. The soldiers dug a deep trench to protecttheir position.
   士兵们挖了一条深壕沟来保护自己的位置。
2. 2. He wore a trenchcoat in the cold weather.
   他在寒冷的天气里穿着一件风衣。
3. 3. Theengineers were working on a trench for the new road.
   工程师们在为新路挖掘战壕。