调查人员预计到了这个结果，但一个新发现令他们出乎意料：生活在复杂社会群体的动物在实验中并没有表现出优势。

The researchers expected that result, but they were surprised by another finding. Animals that lived in complex social groups did not do particularly well.

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但一个被掩埋的动物尸体不能长久地保持新鲜，而且占据尸体的细菌群体很可能会威胁到正在成长中的甲虫幼虫。

But a buried carcass is not going to stay fresh for very long, and the bacterial communities that colonise it are likely to threaten the beetle's developing larvae.

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