Centuries ago, human beings looked up at the night sky and imagined that a black globe enveloped the Earth.

几百年前，当人们抬头仰望夜空时，都认为地球被一个黑色的罩子包裹着。

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Thanks to processes which we set at work in them centuries ago, they find it all but impossible to believe in the unfamiliar while the familiar is before their eyes.

归功于几世纪以前我辈就已启动在人心智里的认知方式，人们发现置身在日常耳熟能详的事物中，已经很难去相信另有一种超乎自然的存在。 继续努力吧！

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Astronomers have much sharper eyes at their disposal now than they did four centuries ago.

和4个世纪前相比，天文学家们现在有更敏锐的“眼睛”来供他们使用。

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It was realised at least three centuries ago that a single economy should have at most one central bank.

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Compare that to a century ago: people did indeed still starve in the streets in what are now rich parts of the world: two centuries ago we still had at least occasional outbreaks of widespread famine among those at the bottom, those at the not-interesting end of the inequality gap.

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But centuries ago, the great powers were almost always at war, and until quite recently, Western European countries tended to initiate two or three new wars every year.

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