She told the agency's Executive Board on Monday that the level of action should not be governed by the size of a problem.

VOA: special.2011.01.19

It shouldn't be difficult to see a kind of problem that is beginning to arise in Milton's text here.

这是一个很容易看出的问题,在弥尔顿的作品中也被提了出来。

耶鲁公开课 - 弥尔顿课程节选

So let's actually let you try another example of solving a problem that has to do with one of the spectrums.

下面请大家来看一下另一个例子,这次是一个需要大家解决的关于光谱的问题。

麻省理工公开课 - 化学原理课程节选

So, that's a problem that we're running into.

NPR: Illinois Renters Given Time To React To Foreclosures

But he says that if people are using Zetia or Vytorin on patients who could instead tolerate a higher dose of a statin, that's a problem, because statins have proven benefits and Zetia doesn't.

FORBES: A Backlash Against Vytorin?

That's a problem for a book that wants to be a serious history.

ECONOMIST: The Mitrokhin archive