She measured the distance between the bones in the finger, because when we get older, the space becomes smaller-- they become tighter.
她测量指骨间的距离,人越老,骨骼间空隙变得越小-,指骨变得更紧。
So what we do is we pick an origin, call it zero, we put some markers there to measure distance, and we say this guy is sitting at 1,2,3,4,5.
我们现在选择一个原点,称其为零点,我们做一些标记来测量距离,这个点在五个单位长度的地方
Studies have been done in the city of New York where you can-- if you live in Manhattan you can actually get a very nice metric of how far apart people live from each other in city blocks. Right?
纽约市就做过这类实验,在纽约-,如果你生活在曼哈顿,你能准确地测量,生活不同街道的人相互距离多远?
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