| 单词 | species barrier |
| 释义 | species barrier Then suddenly, in less time than it takes for a virus to jump the species barrier, this erstwhile scepticism leapt from denial to despair. Times, Sunday Times Once the virus crosses the species barrier it will spread readily from person to person, rather than with difficulty from bird to person. Times, Sunday Times Occasionally these can jump the species barrier and cause illness in humans who come into close contact with infected birds. Times,Sunday Times The rate at which these are jumping the species barrier also appears to be speeding up. Times, Sunday Times Certainly, in the past generation art has leapt the species barrier. Times, Sunday Times |
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