鹿砦

例句：

1. 1. The soldiers dug adeep spear pit to protect themselves from theenemy's attack.
   士兵们挖了一个深的矛坑来保护自己免受敌人的攻击。
2. 2.The ancient city walls were lined with spearpits to deter invaders.
   古老的城墙上布满了矛坑，用来阻止侵略者。
3. 3. Thearchers positioned themselves inthe spear pits to fire theirarrows at the enemy.
   弓箭手们站在矛坑里，向敌人射出箭矢。