10, 000 years later, the only evidence of human existence left on Earth would be giant eroded structures made of stone.

一万年后，地球上人类存在的唯一证据将是巨大的石头侵蚀结构。

That giant structure you see inside is an actual replica of the International Space Station.

你在里面看到的那个巨大结构是国际空间站的真实复制品。

With numbers like that it's  no wonder then that these giant structures are becoming increasingly common.

有了这样的数字，难怪这些巨型结构变得越来越普遍。

Aviation for 100 years has involved carrying people somewhere in the air on a giant metal structure with thousands of gallons of fuel strapped underneath.

100 年来的航空业一直是用一个巨大的金属结构将人运送到空中某处，该金属结构下装有数千加仑的燃料。