如果曾经有那么一个书签，真的减弱了你低产的本性，那么它是定时器。

If there was ever a bookmark that actually reduced your unproductive nature, it is Tick Tock Timer.

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对非外来物种的研究没有得到类似的结果，这使得研究人员推测鸟类的社会学习能力可能与哺乳动物的社会学习能力有根本性的区别。

Studies on nonalien species have not produced similar results, leading researchers to speculate that avian social learning may be fundamentally different from that of mammals.

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中国人认为孔子是最伟大的思想家，他对人类的本性和行为有许多明智的看法。

Chinese see Confucius as the greatest thinker who had many wise ideas about human nature and behavior.

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It certainly feels, to my mind, as though it's an extra bad about the nature of death.

当然有这个，在我看来，像是关于死亡本性的另一个坏处。

耶鲁公开课 - 死亡课程节选

And we pay a very high price for this inability, for this refusal to accept the fact that it is part of human nature that is constrained, that is there no matter what.

我们为这种无能付出高昂代价，为拒绝接受,本性受约束，生而有之的事实，付出高昂代价。

哈佛公开课 - 幸福课课程节选