There were many changes in the social customs and day-to-day life of millions of Americans during the administration of President Calvin Coolidge.

VOA: special.2011.01.06

The rise of the polis is based upon critical, economic, military,social,and political changes, all of which produce a world that's really strikingly different from the one that was just before it.

城邦的兴起是基于关键方面,经济,军事,社会 和政治的变革,所有的一切都造就了一个,与之前的时代截然不同的新世界

耶鲁公开课 - 古希腊历史简介课程节选

The rise of the polis is based upon critical, economic, military,social,and political changes, all of which produce a world that's really strikingly different from the one that was just before it.

城邦的兴起是基于关键方面,经济,军事,社会 和政治的变革,所有的一切都造就了一个,与之前的时代截然不同的新世界

耶鲁公开课 - 古希腊历史简介课程节选