英语语法分析

beachheads

n．滩头，登陆点：军队在敌方领土上建立的初步和暂时的阵地，通常是为了进一步推进和扩大进攻范围。

例句

It was not until June 12, 5 day after D-Day, that the Allied beachheads were linked as a whole.

直到六月十二日，也就是d日后的第五天，盟军才最终把各个登陆场连为一体。