cities with more than 10 million inhabitants.

也就是擁有一千萬名以上居民的城市

By 1980, these were joined by Mexico City, Sao Paulo, and Osaka.

到了 1980 年，墨西哥城、聖保羅、以及大阪加入了它們的行列

In 2010, there were over 20 megacities spanning almost every continent.

在 2010 年，已經有 20 座以上的巨型城市跨足了幾乎每一塊大陸

Today, there are 32 megacities.

如今，總共有 32 座巨型城市

Urbanisation is happening faster than at any time in human history.

都市化的速度之快，早已超越了歷史上的任一其他時間點

Asia accounts for over half of today's megacities.

現今的巨型城市有一半以上座落於亞洲

By 2030, nearly 9% of the world's population will live in 41 megacities,

到了 2030 年，將會有接近 9% 的世界人口住在 41 個巨型城市中

but it's in Africa where some of the most rapid urbanization will take place in the future.

但在將來，都市化的速度會在非洲達到高峰