滩头阵地

例句：

1. 1. The soldierswere deployed at the pierhead to defend against an imminent attack.
   士兵们被部署在码头上以抵御即将到来的攻击。
2. 2. The battlewas fought on the beachhead, where the enemy's lines were weakest.
   战斗是在海滩上进行的，敌人防线最薄弱的地方。
3. 3.The commander ordered a reinforcement to thepierhead to strengthen the defenses.
   指挥官命令增援部队到滩头阵地加强防御。