He didn't even begin to understand my problem.

他完全没有弄明白我的问题。

《牛津词典》

I feel very alone and distressed about my problem.

我对我的问题感到孤单无依，苦恼不已。

《柯林斯英汉双解大词典》

When I explained my problem, she understood completely.

当我解释我的问题时，她完全理解了。

youdao

And even among those that quote,unquote may be hungry or poor, it's quite often viewed as 'they deserved it, they are not hard workers, it's not my problem,'".

VOA: standard.2009.09.09

So what's my problem here, and this is what I want to now lead up to.

而不是半径和角度，因为这个原因。

麻省理工公开课 - 计算机科学及编程导论课程节选

It's not my problem, but I do want to...

这不是我的问题，但我确实想……

肉品市场区的作家 - SpeakingMax英语口语达人

Thank God for Geektown999 at a random online user forum I found who solved my problem.

FORBES: Here's Why I'm Grateful Microsoft Doesn't Build Airplanes

My problem with being able to prove that is, well, how would you prove it?

FORBES: Eurozone: France to be Stripped of AAA Rating This Week?

My problem was that I had too much confidence in Microsoft's Windows 8 installer software.

WSJ: A Review of Windows 8 Upgrade: Not for Old-at-Heart PCs