It is now well known that the enormous Cathedral only survived Allied bombing because it served as a navigation beacon for pilots.

如今，这座大教堂之所以得名，是因为它是唯一一座在盟军轰炸中幸存的大教堂，给飞行员起到了导航灯的作用。

And the moon and stars act as navigation beacons, guiding birds across continents.

月亮和星星充当导航灯塔，引导鸟类穿越大陆。