战壕

例句：

1. 1. The soldiers dug a trench to protect themselves from the enemy's attack.
   士兵们挖了一个战壕来保护自己免受敌人的攻击。
2. 2. He wore a trench coat in the cold winter weather.
   他在寒冷的冬天穿着一件风衣。
3. 3.The trench was filled with mud and water, making it difficult for the soldiers to move forward.
   战壕里满是泥水，使得士兵们难以前进。