But it has taken on new urgency,coming one day after the World Health Organization raised its global swine flu alert to Phase 4 on the six-point scale.

VOA: standard.2009.04.28

And so the stories couldn't have been simple inventions, and that began a new phase in the story. And, again, to repeat what I said last time, there were certain stunning physical resemblances between what Homer said and what we could see.

所以,神话传说并不只是人们的空想,这样事情就有所不同了,同时,我重复下我上次所说的,《荷马史诗》所描述的世界,在当今确有令人吃惊的实物证据

耶鲁公开课 - 古希腊历史简介课程节选

If I followed one of them it is in a phase that's called G1 first and this is a resting phase before it enters the process of synthesizing new DNA in preparation for another round of mitosis.

如果我们跟随一个细胞前进,首先进入G1期,这是一段静息期,之后进入,合成新DNA的S期,为下一轮有丝分裂做准备

耶鲁公开课 - 生物医学工程探索课程节选

The first phase of the Kyoto Protocol expires in 2012 and the current talks are aimed at setting in place new legally binding emissions targets for the decade to come.

VOA: standard.2009.11.04

The last phase of the new missile defense plan, to be ready by 2020, would be to develop interceptors with the capability of blocking long-range Iranian missiles aimed at the United States.

VOA: standard.2009.09.17

Preliminary phase one tests of this new type of flu vaccine have already started in humans, but in an interview, Nabel said that even if all goes well, it will still be years before a universal flu vaccine is widely available.

VOA: standard.2010.07.21