坏男孩身上的“黑暗性格”很明显，而且根据某一类理论，他们的行为是带有遗传性的，意味着他们不可能改变自己的处事方式。
Bad boys exhibit dark triad traits and their behaviour, according to one theory, is genetic, meaning they are unlikely to change their ways.
这是一种在生死攸关的最黑暗时刻需要的勇气，要有很坚强的性格才能聚集这样的勇气去开始做一件事情。
This is the kind of courage that is called for in the darkest moments with the most at stake, and it takes great strength of character to muster it up and get going.
这项研究有助于解释为什么那些被认为是“黑暗三性格”的反社会人格特征并没有被进化淘汰，尽管他们潜在地具有重要文化价值可能造成严重文化损失。
The finding may help explain why a nasty suite of antisocial personality traits known as the "dark triad" persists in the human population, despite their potentially grave cultural costs.
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