科学家发现古代南极青蛙
日期:2020-05-03
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species -- n. biology : a group of animals or plants that are similar and can produce young animals or plants : a group of related animals or plants that is smaller than a genus
amphibian – n. an animal (such as a frog or toad) that can live both on land and in water
ecosystem -- n. everything that exists in a particular environment
global -- adj. involving the entire world
extinct – adj. no longer existing
relative -- n. something that belongs to the same group as something else because of shared characteristics, qualities, etc.
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