A mole can undermine the strongest rampart.

一只田鼠能毁坏最坚固的垒。

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

有一个卫兵在沿着城走动。

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，照现在的形势看，我觉得将最好是不设我们这样的长城保护员了，那就说明长城沿线的人们保护长城的意识已经到了相当高的境界了，人为破坏长城的现象也没有了。