The worst may be over,". "But,it would be unwise for anybody to reach firm conclusions before April, when the normal influenza season usually ends.

VOA: standard.2010.01.18

Whatever happens to me, when it's spread out over six billion plus people, it ends up divided by six billion and it becomes unobservable.

发生在我身上的事，分散到六十多亿人口上，被六十亿除,就变得难以察觉。

耶鲁公开课 - 金融市场课程节选

For injustice is most dangerous when it is armed and man armed by nature with good sense and virtue may use them for entirely opposite ends.

因为非正义一旦被武装起来将最为危险,好人也可能利用,善心和美德而为非作歹

耶鲁公开课 - 古希腊历史简介课程节选

"You really need system-wide Skolkovas - Silicon Valley - otherwise it ends up just like under Catherine the Great when they imported a lot of German tradesmen and planted them in various settlements - but they were fairly self-contained.

VOA: standard.2010.06.18

When it cuts it leaves sticky ends or un-base paired single stranded regions on each end of the part its cut and that's just a property of many restriction enzymes; not all, some cut blunt,just right down the middle.

它切割后会留下两个粘性末端,或者未配对的单链部分,这是许多限制性内切酶的特性,但不是全部,有些限制性内切酶是从中间钝切的

耶鲁公开课 - 生物医学工程探索课程节选

But the evening really kicks into high gear after the scientist's presentation ends, when the audience gets to start the conversation: "Is it still a question as to whether there is a lot more plant diversity in the Andes versus the Amazon?"

VOA: standard.2010.05.04