So, what's stopping us from building this massive structure?

所以，我们为什么还不盖这个超巨大的建筑物？

Many more panels sit on top of a massive parking structure.

很多太阳能电池板安装在大型停车楼的上方。

Now, we are finally beginning to see how these massive structures will eventually age.

现在，我们终于可以看到这些巨大建筑最终会如何老化。

And that's a really massive structure and we will have to have special cranes to lift that up.

这一部位的结构巨大，我们必须要用特殊的起重机将其吊起。

Massive structures could be suspended over bodies of water, or rocky terrains where we wouldn't otherwise be able to build.

我们从前没法做到的事，比如在水域或者地势陡峭的多岩地带建造大型建筑，这也将成为可能。

The massive structure was slowly, but inevitably, drifting out of its orbit.

这个巨大的结构缓慢但不可避免地偏离了轨道。

Now, we are finally beginning to see how these massive structures will age.

现在，我们终于开始看到这些巨大的结构将如何老化。

And as we build more and more of these massive structures it's worth asking how long that shelf life actually is.

当我们建造越来越多这样的大型建筑时，我们不禁要问，这个保质期到底有多长。

Using partially digested plant material, soil, and poop, they construct a massive egg-shaped structure, complete with numerous passages, chambers, and ventilation holes.

它们使用部分消化的植物材料、土壤和粪便，构建了一个巨大的蛋形结构，并配有许多通道、腔室和通风孔。

Wright Mons  is a massive structure made mostly of water ice, standing 4 kilometers tall, with a gaping  depression in the middle.

赖特蒙斯 (Wright Mons) 是一座主要由水冰构成的巨大建筑，高 4 公里， 中间有一个巨大的凹陷。

Shenzhen is now left with some massive concrete structures that are nearing the end of their relatively short lifespans and there's only two options left: demolition or regeneration.

现在，深圳留下了一些大型混凝土建筑，它们的寿命相对较短，已接近尾声，只剩下两种选择：拆除或重建。

Across all three sites, when it came to  lowering the caissons, hydraulic dampers in each corner helped to absorb the force of  these massive structures hitting the seabed.

在所有三个地点，当需要降低沉箱时，每个角落的液压阻尼器都有助于吸收这些巨大结构撞击海床的力量。

Instead of having one massive structure, one hundred kilometers in length, we actually now have many smaller systems, about 50 units of maybe about one to two kilometers in length.

而不是一个长一百公里的大型结构， 实际上，我们现在拥有许多较小的系统，大约有 50 个单位， 长约一到两公里。

While the wings, engines, landing gear, and lower fuselage remain the same as on the standard A300, the upper fuselage creates a massive horseshoe shaped structure that is 25 feet (7.7 meters) in diameter.

虽然机翼、发动机、起落架和下部机身与标准 A300 相同，但上部机身形成了一个直径 25 英尺（7.7 米）的巨大马蹄形结构。

Water that started its journey as tiny  drops of rain in a heavy storm - funneled and concentrated by the earth's topography and  turbulently released through massive human-made structures - had carved harrowing scars  through the hillside.

水的旅程始于一场暴风雨中的微小雨滴，通过地球地形的漏斗和集中，并通过巨大的人造结构汹涌地释放出来，在山坡上留下了令人痛心的伤痕。