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单词 the species barrier
释义 the species barrierBrE /ðə ˈspiːʃiːz bæriə(r)/NAmE /ðə ˈspiːʃiːz bæriər/ noun [sing.] the natural system which is thought to prevent diseases spreading from one type of animal or plant to another 物种屏障(防止疾病在物种之间传播的自然机制)
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