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。
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。
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。
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.
利用简单的价电子成键理论，我们预计，要把所有甲烷中没有配对的电子，和氢原子中没有配对的电子配对来形成键。
One great way to stay on target and earn better grades is to pair up with a good study partner.
和一个好的学习伙伴一同学习是提高学习成绩的不错方法。
One great way to stay on target and earn better grades is to pair up with a good study partner.
和一个好的学习伙伴一同学习是提高学习成绩的不错方法。
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