2019年同等学力英语练习---翻译(27)

　　The researchers suggest that capuchin monkeys, like humans, are guided by social emotions. In the wild, they are a cooperative, group-living species. Such cooperation islikely to be stable only when each animal feels it is not being cheated. Feelings of righteous indignation, it seems, are not the preserve of people alone. Refusing a lesser reward completely makes these feelings abundantly clear to other members of the group. However, whether such a sense of fairness evolved independently in capuchins and humans, or whether it stems from the common ancestor that the species had 35 million years ago, is, as yet, an unanswered question.

　参考答案：

　　研究人员暗示，和人类一样，僧帽猴也受社会性情感的支配。在野外，它们是协作、群居的物种。只有在每个动物都觉得它没有受到欺骗时，这种协作才有可能稳定。如此看来，正当的愤怒感并非人类所特有的。完全拒绝较小的奖励使得群体的其它成员非常清楚这些情感。不过，到现在为止，这种公平意识是否在僧帽猴世界和人类社会独立演化，还是源于3500万年前他们的共同祖先，这仍然是一个“悬而未解”的问题。