非洲和南美洲实际上要大得多。
非洲和南美洲曾经彼此相连可以从这一事实推断出来。
That Africa and South America were once joined can be deduced from the fact that.
主要危险区是非洲，东南亚，印度和南美洲。
The main risk areas are Africa, South East Asia, India and South America.
大约8.0亿来自非洲、亚洲和南美洲人吃木薯。
About eight hundred million people in Africa, Asia and South America eat cassava.
大约8.0亿来自非洲、亚洲和南美洲人吃木薯。
About eight hundred million people in Africa, Asia and South America eat cassava.
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