短语词组短语Beachhead Defence 抢滩登陆alternate beachhead 备用登陆场Alliance Beachhead 联盟滩头beachhead line 滩头阵地线Beachhead Defensive 抢滩防御战beachhead detail 血战桥头堡Tarawa Beachhead 塔拉瓦阵地beachhead fish 滩头to seize a beachhead 抢滩 返回 beachhead