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The previous emperor, Caligula, was assassinated.Claudius could be next.
上一任皇帝 卡里古拉 是被暗杀的 接下来要轮到克劳狄乌斯了
The best way for an emperor to win over the public:Build.
让皇帝赢得民心最好的方法 就是建设
8 miles from the city,
罗马城八英里外
One of the largest engineering projects in the empire:An mighty aqueduct.
是罗马帝国最大的工程项目之一 一个规模宏大的引水渠
To carry water to the city,
为了把水输送到城市
Roman engineers carve a route through 45 miles of countryside.
罗马工程师开凿出45英里的路 穿越了乡村
They tunneled through mountains, they bridged across valleys,
他们在山中通隧道 在山谷间搭桥
they built these vast structures
他们建造了这些宏大的建筑物
across huge amounts of space without dynamite,
跨越了巨大的空间 没有炸药
without any kind of modern tools,
没有任何现代的工具
and yet they're so well built that 1500 years after the end of the civilization,
那些建筑被建造得如此出色 以至于在罗马文明消亡后的1500年
those structures are still standing.
它们依旧巍峨伫立着
The aqueduct is powered by gravity.
引水渠利用了重力原理
It needs to drop one foot every 300.
每隔三百英尺就要让水下流一英尺
Too steep, and the water will overflow.
太陡的话 水会泛滥
Too shallow, it'll run dry.Precision engineering.
太浅的话 水会干涸 这是高度精密的工程
The secret to Roman construction:
罗马建筑的奥秘在于
A revolutionary new building material.
一种全新的革命性的建筑材料
Easy to mould, it sets rock hard.Concrete.
易于塑形 坚如磐石 这就是混凝土
