ramparts

A mole can undermine the strongest rampart.

一只田鼠能毁坏最坚固堡垒。

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

有一个卫兵在沿着城堡来回走动。

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，照现在形势来，我觉得将来最好是不再需要设我们这样长城保护员了，那就说明长城沿线人们保护长城已经到了相当高境界了，人为破坏长城现象再也没有了。