任何一个音乐爱好者都曾在某些时刻有过关于音乐主观的幻想——把完美的歌和一段影片内容配对起来，感觉就像是一种音频上的酒师。

Any music fan at some point has fantasized about being a music supervisor-pairing the perfect song with a piece of video content like some kind of audio sommelier.

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他们把配对的雌性和雄性蝙蝠放入笼中，用以模仿自然环境，然后红外摄像头会把它们在夜间的勾交行为拍下传到实验室。

The researchers paired males and females in cages designed to mimic their natural environment, while infrared cameras beamed video of the creatures' nighttime liaisons back to the lab.

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研究人员挑选出41只宠物狗，把它们分为拉布拉多猎犬、狮子狗和斯塔福德狗3组，然后让70名志愿者观看宠物狗和主人的照片，并给宠物狗和主人做配对判断。

A group of 70 people were asked to match photos of 41 dog owners to 3 possible breeds - Labrador, poodle or Staffordshire bull terrier.

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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。

麻省理工公开课 - 化学原理课程节选