And,these are occurring at a time when the global economic crisis is making it more difficult to maintain good health, especially in the developing world.

VOA: standard.2009.05.18

But if you think of the time span about 900 to 700 B.C., that is, when these changes are taking place.

但是如果你发现它发生在,大约公元前900年到700年之间时

耶鲁公开课 - 古希腊历史简介课程节选

When these tyrannies take place, they last for different periods of time, but when the tyrant is removed, what follows after that is, there is never again in that town a one-man rule of any kind.

当僭主统治步入历史舞台,它走过了很多历史时期,但当它寿终正寝之后,在那座城邦里再也没有出现过,任何形式的独裁者了

耶鲁公开课 - 古希腊历史简介课程节选

"These attacks have been on-going for quite some time and the sudden escalation at a time when the regime is claiming that they're going to have democracy and elections and everything is going to be better is very disturbing."

VOA: standard.2010.07.27