It's also an escape. A big problem we have in the neighborhood is obviously gangs,and family dynamics.

VOA: special.2010.11.04

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

Don't just stop in the middle of the street because everyone is coming right behind, and it's going to cause a problem.

请不要停留在街道中央，因为街上人来人往，
你的停留是会惹麻烦的。

在纽约的感受 - SpeakingMax英语口语达人

Senator LAMAR ALEXANDER (Republican, Tennessee): The idea of a government-run health care plan is a big problem for us, and it's a big problem because it leads inevitably to a Washington takeover of health care.

NPR: House, Senate Offer Health Care Plans

It's about being aware that it's a problem you've got to continually be on top of.

BBC: Matt Stevens says cocaine ban was a good thing

One of the report's authors, Prof Alimuddin Zumla, said: ""It's a growing problem in London and a huge, huge problem in Europe - it's in our backyard at the moment.

BBC: 'Visionary' leadership needed on TB