officials could get mail delivered fairly quickly.

以相当快的速度传递信件
They used even a horseback relay that could go a hundred kilometers a day.

罗马人使用驿马接力可以日行100公里
Soldiers were expected to be able travel thirty kilometers

士兵全副武装时估计可以
per day, in full pack.

日行30公里
And that was only possible because,

它们能够实现是因为
besides using the sea, the shipping lanes for travel,

因为除了海运海上航线
which was much faster than overland travel,

比陆地上快得多
the Romans maintained roads.

罗马人还修筑道路
They didn't really care about roads for everybody else.

道路并不是为民众而建
They wanted the roads for their Army,

军队调动需要修筑道路
just like the US Interstate system was originally created in

就像最初美国修筑州际公路只是为了
case the Army needed to be moved across the country very quickly

苏联来袭时军队能够