甲烷是天然气的主要成分，也是温室效应相对比较高的气体之一，它对气候变化的影响远比二氧化碳强得多。

Methane, the primary component of natural gas and among the more potent greenhouse gases, has far more of an effect on climate change than carbon dioxide.

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至关重要的是，这些适应力强的老鼠也给它们自己的下一代同样的关怀，而实际上这正是因为诱导发生了相似的表现遗传学变化，使得这种行为代代相传。

Crucially, these well-adjusted rats then gave their own babies the same type of care-in effect, transmitting the behaviour from mother to daughter by inducing similar epigenetic changes.

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超级计算机的定义变化很快，美国和欧洲的学术机构不停地刷新着超级计算机500强的榜单。

Just what constitutes a supercomputer remains a rapidly moving target, with the fastest defined by the Top500 list maintained by academics in the U.S. and Europe.

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You have extensive properties and intensive properties The extensive properties are the ones that scale with the size of the system.

广延量,和强度量,广延量的值,随着系统的规模变化。

麻省理工公开课 - 热力学与动力学课程节选

Change often signals danger or opportunity and if we are especially tuned-in to change, it helps us survive ? and it helps us pass along our genes. Okay?

变化通常意味着危险和机遇,如果我们能调整适应变化，我们生存能力更强,并且能传递我们的基因，是不是？

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So that should mean that the energy that's transferred to the electron should be greater, but that's not what you saw at all, and what you saw is that if you kept the frequency constant there was absolutely no change in the kinetic energy of the electrons, no matter how high up you had the intensity of the light go.

所以这意味着转移到电子,上的能量也越大，但这并不是，我们观测到的现象,我们所看到的是,如果固定光的频率不变,不管光强如何变化,电子的动能没有任何变化。

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