Houseboats also contribute to the lake's pollution and the development authority says they should install small sewage systems.

VOA: standard.2009.12.16

So, I want to stress the sense of natural development, not some kind of a central authority making a decision about anything.

我在这里强调,这是一种自然的发展方式,不是某种中央政权进行决议的结果

耶鲁公开课 - 古希腊历史简介课程节选

So, I want to stress the sense of natural development, not some kind of a central authority making a decision about anything.

我在这里强调,这是一种自然的发展方式,不是某种中央政权进行决议的结果

耶鲁公开课 - 古希腊历史简介课程节选