17. If one begins by examining why ancients refer to Amazons , it becomes clear that ancient Greek descriptions of such societies were meant not so much to represent observed historical fact -real Amazonian societies - but rather to offer moral lessons on the supposed outcome of womens rule in their own society . 如果我们先研究一下为什么古人会提到亚马逊人,下面的一点就变得清晰了,那就是古希腊对于这种社会的庙睡不是太多的被用来表达观察的历史事实真正的亚麻逊社会的而是为了对于妇女在其社会中的统治的预期后果提供一种道德教导.
18. Thus,for instance,it may come as a shock to mathematicians to learn that the Schrodinger equation for the hydrogen atom is not a literally correct description of this atom,but only an approximation to a somewhat more correct equation taking account of spin,magnetic dipole,and relativistic effects;and that this corrected equation is itself only an imperfect approximation to an infinite set of quantum field-theoretical equations. 因此,举例来说,对数学家而言,了解到下述情形可能会令其惊愕不已,即薛定谔的氢原子方程式并非是对该原子作出的一种绝然正确的描述,而仅仅是个近似值,趋近于一个在某种程度上更为正确的将自旋、磁性偶极子、以及相对论效应考虑在内的方程式;而这个得以纠正的方程式就其本身而言也只是一个不完美的近似值,趋近于无穷无尽的一整套量子场论方程式。
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