By virtue of their different chemical properties , some amino acids are attracted to each other ( for example , oppositely charged amino acids ) and so will associate ; other amino acids will try to avoid water ( because they are greasy ) and so will drive the protein into a compact shape that excludes water from contacting most of the amino acids that " hide " in the core of this compacted protein 由于氨基酸各不相同的化学属性，有些氨基酸会因为互相吸引（比如电荷相反的氨基酸）会连接在一起；还有些氨基酸因为不亲水（因为它们是油性的） ，它们就会驱使蛋白质形成一个紧凑的形状，以至于不让水碰到藏在蛋白质核心中的氨基酸。
When newton formulated the law of gravity , he did not say that the sun or the earth has the property of attraction . he said that all bodiesfrom the greatest to the smallesthave the property of attracting one another ; that is , leaving on one side the question of the cause of the movements of bodies , he expressed the property common to all bodies , from the infinitely great to the infinitely small 当牛顿宣布万有引力法则的时候，他并未说，太阳或地球有一种吸引的性质他说，从最大到最小的所有物体都具有互相吸引的性质就是说，他扔开导致物体运动原因的问题，来说明从无限大到无限小的所有物体共同的性质。
He knew , and she knew , that , though the fascination which each had exercised over the other - on her part independently of accomplishments - would probably in the first days of their separation be even more potent than ever , time must attenuate that effect ; the practical arguments against accepting her as a housemate might pronounce themselves more strongly in the boreal light of a remoter view 他知道，她也知道，虽然互相吸引对方的魅力在她那方面并不是靠才艺大概从他们分别的第一天起就会比以往更强烈，不过时间一定会慢慢使它减弱的那些反对他把她作为主妇接受的种种实际理论，也许从一个旁观者的眼光去看就会变得更加清楚了。
