And scientists often have trouble explaining what they do in language that the public can understand.

VOA: special.2010.05.14

And, if you have trouble balancing equations, you can look in section 2.11 in the text.

如果你在配平方程式方面有问题，你可以看看课本中的2。11节。

麻省理工公开课 - 固态化学导论课程节选

The thought was that the central bank is guarding the money stock and governments have a tendency to sometimes want to raid the bank when they're in trouble.

观点是,中央银行在保护金融债券,而政府当看到,银行陷入困境时,有查抄这家银行的倾向。

耶鲁公开课 - 金融市场课程节选

For example, they must have left school or been in trouble with the law.

VOA: special.2009.08.20

So a number of you, even if the price was just a tiny bit different might have a preference for one rather than the other, so without getting in trouble by putting the camera on you, how many of you would have a preference, if the prices were essentially the same how many of you would have a strict preference for Pepsi?

那么你们中的很多人,尽管价格只有一点点不同,也许还是倾向于其中一个产品,不让你们上镜头而招来麻烦,你们谁会有倾向,如果价格差不多,谁会倾向选择百事可乐

耶鲁公开课 - 博弈论课程节选

"They are checking so I won't have no trouble in the future to play sports,".

VOA: standard.2009.12.12