英语语法分析

bridgeheads

n．桥头堡（复数）：在敌方防线后设立的据点，用于保护渡口或桥梁，为进一步行动提供支持。

例句

The British Airborne Division was to land in the area north of Caen. Its main task was to seize the bridgeheads of the rivers between the town and sea.

英国空降师在卡昂以北降落，主要任务是夺取卡昂至沿海河流上的桥头堡。