South America had been isolated from northern landmasses for tens of millions of years and was teeming with marsupial species, including several successful carnivorous varieties.

　
英 美
  • 南美洲與北方大陸已經(jīng)隔絕了幾千萬(wàn)年，上面住滿(mǎn)了有袋類(lèi)動(dòng)物，其中還有幾種成功的肉食性種類(lèi)。
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