Under these circumstances, archaeologist Andrew Smith believes, the small herds of Bos primigenius in the desert became smaller, more closely knit breeding units as the drought took hold.

考古学家安德鲁·史密斯认为，在这些情况下，随着干旱的持续，沙漠中较小的原牛群会变成更小、联系更加紧密的繁殖单位。

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Flaws in the system have created a breeding ground for financial scandals.

制度中的漏洞给金融丑闻的滋生提供了土壤。

《柯林斯英汉双解大词典》

The majority of them may have to find new breeding grounds in the future.

它们中的大多数在未来可能不得不寻找新的繁殖地。

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In a disputed decision, officials took the wild condors into captivity so that their breeding could be supervised and protected.

VOA: special.2009.11.18

"We have a breeding program that would result in oysters that have a higher meat yield in it during the summer time."

VOA: standard.2010.07.13

And so Tai will be sent to one of the large breeding programs in Sichuan province, where he'll be paired with a mate.

VOA: standard.2010.02.02

But some wildlife officials said the ban came too late - after the southern Asia natives had begun breeding in the Everglades.

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Last year's count introduced a few new species to North America, including the exotic purple swamphen, an escapee now breeding in the Florida Everglades.

ECONOMIST: A splendid tradition in its 109th year

According to Aqua Bounty, the engineered salmon are all female, sterile, and raised in physically contained facilities, so the chance of the fish breeding in the wild is negligible.

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