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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To commemorate World Food Day, we look back on science's role in alleviating the hunger crisis. Whale breeding, desert sugar factories, and oyster soup capsules, yum.

为了纪念世界粮食日(World Food Day)，我们回溯了科技在缓解饥饿危机中的作用。

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