Lagos is one of the fastest-growing megalopolises in the world.

拉哥斯是成长最快的特大城市之一。

But a new survey suggests megalopolises aren't quite the homogenous ecosystems you might think.

但是一项最新的人口稠密的一线城市可不是想象中那样单的生态系统。

For speculators looking at property, the excess supply in smaller cities was all too evident, so they turned instead to the megalopolises.

对于把目光投向的投机客而言，小城市的屋供给过剩太明，所以他们转而看向大城市。

Let's cut to the chase: the Milky Way galaxy is a vast, flat, disk-shaped collection of gas, dust, and stars — a sprawling megalopolis that's a mind-crushing 100,000 light years across and several thousand light years thick.

银河系是一个巨大的、扁平的、盘状的气体、尘埃和恒星的集合——一个庞大的大都市，直径达10万光年，厚达几千光年，令人叹为观止。