grenade pit

例句：

1. 1. He was injured in the grenade pit during the battle.
   他在战斗中被手榴弹坑炸伤了。
2. 2. The soldiers were ordered to clear the grenade pit and search for survivors.
   士兵们被命令清除手榴弹坑并寻找幸存者。
3. 3. The grenade pit was filled with debris and rubble.
   手榴弹坑里充满了碎片和瓦砾。