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单词 breeding stock
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剑桥雅思听力全真试题 6

Now, we know from modern farming that if the level of breeding stock falls below about three hundred females, the future of species of locally is at risk.

现在,我们从现代农业得知,如果良种畜的水平低于300头雌性,那么当地的未来物种便岌岌可危。

BBC随身英语(官网版)

" On top of that, only if these studies are successful and the public are accepting, would we integrate these gene edits into commercial breeding stocks, " Dr Tait-Burkard told the BBC. So it seems we may have a while yet.

“最重要的是,只有当这些研究成功并且公众接受时, 我们才会将这些基因编辑整合到商业育种中, ” 泰特-伯卡德博士告诉 BBC。 所以看来我们可能还有一段时间。

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