University of Illinois Professor May Berenbaum says it appears that bees could deal with one or two viruses at the same time, but not three or four.

VOA: special.2009.09.22

In the case of the coin toss, there are only two, but I'm saying in general there could be an infinite number.

在抛硬币的例子里,只有两个取值,但是一般都会有无限个可能值

耶鲁公开课 - 金融市场课程节选

And runners proved the doctors and scientists-- proved that they were right and ran the mile in two seconds and 4 minutes, one second, but no runner could run the mile in under 4 minutes, ever since the mile was actually timed-- when they started to time runs.

跑手们证明了医生和科学家…,证明了他们是对的,一英里跑四分钟两秒，四分钟一秒，但没有跑手能少于四分钟，从一英里跑计时以来-,当人们开始计时跑时。

哈佛公开课 - 幸福课课程节选

But Eroglu supports a two-state confederation, which could negatively impact Turkey's bid to join the European Union.

VOA: standard.2010.04.15

But if the two parties fail to make an agreement, Mr.Clegg could side with Labor, giving the party that has led Britain for more than a decade a chance to hold on to power.

VOA: standard.2010.05.10

I don't think we know exactly what's going to happen but it's certainly possible that we could get very sluggish growth over the next year or two and possibly even growth could stall out if it doesn't get underway,".

VOA: standard.2009.12.20