"Our emphasis in Canada for some time now,particularly since we extended our mission, has been the necessity of seeing the Afghan government accept and be able to handle greater responsibility for the day-to-day security of that country,".

VOA: standard.2009.09.16

Now the nice thing about this is that the degradation mechanisms seem to persist for some period of time, beyond the time at which you deliver the double stranded RNA; whereas, obviously, this mechanism here is only going to exist for as long as the anti-sense sequence is present.

而好消息是降解过程会持续一段时间,比你转入双链RNA的时间要长,但是,这种机制只会在,有反义链的时候发挥作用

耶鲁公开课 - 生物医学工程探索课程节选

"I think it is a symptom of the political polarization, which has afflicted the United States now for some time."

VOA: standard.2010.05.04