The structure of the universe may not be reducible to a problem in physics.

宇宙的结构不可能被简化为一个物理问题。

《柯林斯英汉双解大词典》

That's always been a problem in this port.

这是这个港口一直存在的问题。

youdao

I missed by a mile, which is a problem in drawing my lines, but never mind.

我差了一英里，这是我画线的一个问题，但无所谓了。

youdao

Counterfeit medications are also a problem in the Middle East and in many countries of the former Soviet Union.

VOA: special.2010.02.22

So the survivorship bias and the backfill bias would be much,much more of a problem in the hedge fund world.

所以生存偏差和回填偏差,会是对冲基金领域里一个相当重大的问题

耶鲁公开课 - 金融市场课程节选

because I'm sure you have a problem in your country as well.

因为你们国家肯定也有此类问题。

关于世界地球日 - SpeakingMax英语口语达人

Tell us how to handle a problem in spending, in jobs, and in debt.

FORBES: It's A Spending Problem; A Jobs Problem; A Debt Problem

It absolutely can be a problem in their brain and they should not feel guilty.

CNN: When a woman doesn't want sex

If inflation becomes a problem in emerging markets, currency suppression will cease to become an objective.

FORBES: Sell Treasuries, Again