"Here we have a studied intervention, one that has been subjected to clinical trials, and it seems to be beneficial," adds Blayney, who was not involved in the new research.

没有参与到新研究中的布雷勒博士补充说：我们有一个干预研究，一个经历临床试验的人，结果看上去是有益的。

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Humanity undergoes changes, albeit small, with every generation: If a trait is beneficial it will live on, while deleterious ones slowly die off. Here are some superhuman traits that have persevered.

人类经历着变化，尽管微小，却一代接这一代不停止：如果某一特征有益，则将继续存在，而有害的倾向则消亡。

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The results showed that at whatever age, it is beneficial to have a more realistic view of the past and future.

结果显示，无论在什么年龄段，对过去和未来都持现实主义的态度是有利的。

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But, he said, it could have a beneficial psychological effect.

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Although the changing weather patterns may have harmed the start of the season, it appears they have had a beneficial effect on the end as more snow now falls in the Spring.

BBC: Snow cannons pump out artificial snow

Long term it would have been far more successful and beneficial, but it seems that a smash and grab on the network cash reserves is more important.

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