ramparts

A mole can undermine the strongest rampart.

一只田鼠最坚固的堡垒。

There is guard toing-and-froing along the rampart.

有一个卫兵在着堡来回走动。

It seems unnecessary to have watchmen like me on the Wall in the future when people along the Wall know better than to further vandalize the rampart.

不过，照现在的形势来，我觉得将来最好是不再需要设我们这样的长保护员了，那就说明长的人们保护长的意识已经到了相当高的境界了，人为破长的现象再也没有了。