the species barrier
noun /ðə ˈspiːʃiːz bæriə(r)/
  /ðə ˈspiːʃiːz bæriər/
[singular]- the natural system which is thought to prevent diseases spreading from one type of animal or plant to another
| 单词 | the species barrier | 
| 释义 | the species barriernoun /ðə ˈspiːʃiːz bæriə(r)/  /ðə ˈspiːʃiːz bæriər/[singular] 
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