Urbanization on an extraordinary scale is happening in Asia, whose megalopolises are absorbing millions of new residents every year.
亚洲大地上正涌现着一股股波澜壮阔的的都市化大潮，这里的超级大城市每年都能“吞”下数百万的新居民。
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For speculators looking at property, the excess supply in smaller cities was all too evident, so they turned instead to the megalopolises.
对于把目光投向房地产的投机客而言，小城市的房屋供给过剩太明显，所以他们转而看向大城市。
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The rankings were not done by city size alone. Many of the world's largest megalopolises, like Karachi (60), Lagos (59), and Kolkata (63), didn't break the top 50.