The study also found we tend to pair up with people whose facial features have a similar level of symmetry - a sign of beauty - to our own.

此研究也发现人们更倾向于选择那些与自己的相貌对称水平(美貌的指标之一)相近的人。

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At the junction where the two materials meet, electrons pair up with holes to form an area depleted of charge that prevents current from flowing.

两种材料的接合处电子与电穴配对形成一个没有电荷的区域，阻止电流通过。

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Now the numbers are roughly even (in fact women are earning more degrees) and people tend to pair up with mates of a similar educational background.

现在这个数字的性别比例已经相当（实际上有学位的女性更多），而且人们倾向于选择一个有相同教育背景的人作为自己的伴侣。

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For the carbon, we start with 4 valence electrons, we have 0 lone pair electrons minus 4, and we end up with a formal charge of 0.

对于碳，我们从四个价电子开始，我们有零个孤对电子，再减去四，最终我们有零个形式电荷。

麻省理工公开课 - 化学原理课程节选

But because there's this lone pair here, it's pushing down on the other bonds, 5° so we end up with an angle of less than 109 . 5 degrees.

但因为这里有孤对，它会把其它键向下压，所以键角会小于109。

麻省理工公开课 - 化学原理课程节选

But days three and six each have an extra element, And the fact that the first elements here pair up nicely with each other suggests that the extra element on day three and the extra element on day six might also be paired in some important way.

但是第三天和第六天都有一个附加的因素，首要的因素就是这些事物都完美地匹配,这表明，第三天的附加因素,也应该与第六天的附加因素在重要的方面相匹配。

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Since the deal is not exclusive, Audience is free to pair up with other operators.

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He had the opportunity to pair up with another elite receiver if he chose Arizona, where Larry Fitzgerald plays.

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When they eventually pair up with others, they dump their excess energy and thus heat the junction a little.

ECONOMIST: Microrefrigeration