尽管这向天文学家证明了金星被一层厚厚的气体所包围，这层气体使太阳光在金星周围发生折射，但这两种效应都使精确的时间控制成为不可能。

While this showed astronomers that Venus was surrounded by a thick layer of gases refracting sunlight around it, both effects made it impossible to obtain accurate timings.

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但是准确在这里再一次成为不可能。

But here again, accuracy is impossible.

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但是“测量问题”使得计算这些价值成为不可能。

But the "measure problem" makes calculating this value impossible.

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It's really an entry into the other world, and you gonna step through it and become a part of the other world which not necessarily you can see it.

就是进入另一个世界的入口，你可以穿过这扇门,成为这个世界的一部分,而你本来可能不那么轻易获得的。

普林斯顿公开课 - 人性课程节选

It can never be a kind of cosmopolis, a world state or even a league of states or nations.

它永远不可能成为国际都会或世界之都，或甚至是国联或族联。

耶鲁公开课 - 政治哲学导论课程节选

But what's interesting with these cases is you couldn't have predicted ahead of time that they would be heroes.

但这些例子所表明的就是,你不可能提前预知,他们会成为英雄

耶鲁公开课 - 心理学导论课程节选