ramparts

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

有一个卫兵在沿着堡来回走动。

A mole can undermine the strongest rampart.

一只毁坏最坚固堡垒。

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，照现在形势来，我觉得将来最好是不再需要设我们这样保护员了，那就说明沿线人们保护意识已经到了相当高境界了，人为破坏现象再也没有了。