Tropical rainforests are in Africa, Asia, Central and South America, Australia, and on the Pacific islands.

热带雨林分布在非洲、亚洲、美洲中部和南部、澳大利亚以及太平洋岛屿。

youdao

Yellow fever is endemic in tropical regions of Africa and South America, where 44 countries (33 in Africa and 11 in South America) are considered to be at risk.

黄热病在非洲和美洲的热带地区流行，据认为44个国家(33个在非洲，11个在南美洲)存在风险。

youdao

Indica rice thrives in tropical regions of Asia and South America, raising worldwide production more than 20 percent by 1970.

籼稻在亚洲和南美洲的热带地区的蓬勃发展，使1970年全球产量增加了百分之二十。

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Most come from the treetops in wet tropical forests in Central and South America.

VOA: special.2010.04.06

At one time or another, indigenous people in tropical Africa and South America knew how to cultivate and prepare nutritious food by selective breeding of as many as 30, 000 species of plants.

ECONOMIST: Growth and geography

In the wild giant otters are found in remote areas within some freshwater lakes, rivers, creeks, and reservoirs of tropical South America.

BBC: The baby giant otters

In an analysis of 504 world languages, Dr. Atkinson found that, on average, dialects with the most phonemes are spoken in Africa, while those with the fewest phonemes are spoken in South America and on tropical islands in the Pacific.

WSJ: Study Points to a Single, Original Language for All Humans