这提高了精确度，并让时钟变得更小巧。

This improved accuracy and allowed clocks to be smaller.

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由于庞大的体积和重量，现在的农业机械有显著的缺点：它们会把土壤压实，降低土壤孔隙度，杀死有益的生命，这意味着农作物不会长得太好。

With their enormous size and weight, today's farm machines have significant downsides: they compact the soil, reducing porosity and killing beneficial life, meaning crops don't grow so well.

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月球将只离银河中心差3度，这表示，差不多与银河中心完全协调。

The Moon will also be just 3 degrees from the Galactic Center, that is, almost in conjunction.

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He introduced the concept of electronegativity which was a measure, therefore, it is quantitative, of the atom's ability to attract electrons within a covalent bond and developed a scale of electronegativity.

他引入了电负性这一概念,一个反映着原子在成共价键时吸引电子的能力的数据标度，因此这是数量上的，在共价电子中,电子原子能吸引电子,并发展为一定规模的电负性。

麻省理工公开课 - 固态化学导论课程节选

It is something that happens pretty much automatically, with a kind of fluidity that Mike has never achieved.

这是一个相当自然就发生的事情，其中的流度迈克从来没有实现过。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

We'll be talking about the fact that this is an interval of a third; it spans three letter names a little bit later on.

我们以后会谈到,这其实是个三度音程,它跨越了三个音名

耶鲁公开课 - 聆听音乐课程节选