13. 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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14. 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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15. 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.
16. The phenomenon was spotted by British researchers who were studying whether it is true that we tend to pair up with those who are similarly attractive to ourselves.
英国的研究者们对此现象进行了研究，以明确我们是否习惯于和我们长相差不多的人恋爱交往。
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17. Page says that if researchers keep watching Cas A for a few decades, they should see the cooling slow down as all the neutrons pair up and extra neutrino emissions fade.
18. So, using our simple valence bond theory, what we would expect is that we want to pair up any unpaired electrons in methane with unpaired electrons from hydrogen and form bonds.
19. Over the last three years, Google has run a project called the Summer of Code, in which they pair up university-level software developers with open source software projects.
20. At the junction where the two layers meet, electrons pairup with holes, establishing an electric field that prevents electrons from moving from the n-type material to the p-type.
两层接触处电子与“孔”便成双配对地形成了电场，阻止电子从n层移到的p层。
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21. Say so long to boring, bulky binoculars and hello to the LightSpeed B20, the first pair with the ability to record voice and video and beam it instantly to another pair up to two miles away.
