They could see its crenellated walls.

他们可以看到它的锯齿状墙壁。

Meitan-fu with its crenellated walls was like the painted canvas placed on the stage in an old play to represent a city.

城墙呈锯齿状的美坛府，犹如旧戏舞台上的彩绘画布，代表一座城市。