The polis is not merely a city state in the same way as,let us say, the Mesopotamian city states of the third millennium B.C. Were.

那就是城邦不仅仅是一座城市,并不是像,我们说的公元前三千年的,美索不达米亚的城市

耶鲁公开课 - 古希腊历史简介课程节选

OK. If b is even, then a to the b is the same as a squared all to the b over 2.

就等于a的平方的二分之b次方,好，就是把二挪到外面来了。

麻省理工公开课 - 计算机科学及编程导论课程节选

You can verify, in this simple example, that A + B is the same as B + A.

在这个例子中还可以验证,A + B = B + A

耶鲁公开课 - 基础物理课程节选