This June the eyes of the football world will be on South Africa when it becomes the first African country to host the World Cup.

VOA: special.2010.04.28

And there are various forces that play in the nucleus that will dictate when this will be stable and when it won't be.They isolated it, but it decays very quickly on the order of microseconds Lifetime on the order of microseconds.

在原子核中有很多种力,都会产生作用，当条件是稳定的,还有当它不是的时候，它们提取出来，但是它会以微秒的速度衰变,生命只有几微秒长。

麻省理工公开课 - 固态化学导论课程节选

When you retire--you can actually get it now, electronically, your entire employment history, all your contributions-- when you retire, there will be a formula-- you can find it on the Social Security system website-- which resembles the formula that they did in 1889.

现在你退休之后可以自动得到，你这一生的工作情况，还有你全部的投保记录-,当你退休的时候-,你可在社会保障体系网站上找到一个公式-,类似于1889年使用的那个公式。

耶鲁公开课 - 金融市场课程节选

It will be on the agenda again when he visits Pakistan later in the week, before heading into the war zone itself.

VOA: standard.2010.07.22