证据显示，太快地吸入过多的氧气可能夺走单电子的分子，形成自由基。

Evidence suggests that pumping in too much oxygen too quickly can strip the molecule of a single electron, creating a free radical.

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以前，大陆之间的鸿沟允许水自由流动；而现在地峡形成了一道屏障，把大西洋和太平洋分隔开来。

While previously the gap between the continents had allowed a free flow of water, now the isthmus presented a barrier that divided the Atlantic Ocean from the Pacific Ocean.

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美国的繁荣与自由源于阅读和书写所形成的文化。

American prosperity and liberty grew out of a culture of reading and writing.

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These conditions permitted a development of institutions and habits needed for freedom, even as they also made Europe vulnerable to conquests and to extinction, and Europe was almost extinguished practically before there was a Europe; very early in its history.

这些恰恰是自由的形成和发展,需要的的制度和特征,尽管这也使欧洲,在外敌入侵时变的不堪一击,实际上,在它早期的历史中,欧洲在尚未形成前就差点消失

耶鲁公开课 - 古希腊历史简介课程节选

So I guess, by doing this we kind of create a culture where people just talk to each other about stuff and get what each other is thinking more clearly than they would if the organization is more bureaucratic or if like people wouldn't be heard.

这样一来,公司的文化也就形成了,人们可以自由交谈,在Facebook比在,官僚机构,或者比在个人观点不被重视的地方,能更好地了解彼此的想法。

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选