It was difficult to explain the problem to beginners.

对初学者解释这个问题很难。

《牛津词典》

He went to great pains to explain the problem to us.

他费了很大劲向我们解释那个问题。

youdao

I had to explain the problem to her several times before the penny finally dropped.

那问题我给她解释了好几次，最后她才明白。

youdao

She began to explain to the students how to solve a very difficult problem.

VOA: special.2009.10.25

The problem is that the theory of the day can't explain it.

问题是当时没有理论解释这一点。

麻省理工公开课 - 固态化学导论课程节选

What Zelizer reported was that some life insurance companies surmounted this problem by changing the pitch, by telling their salespeople, don't try to explain probability theory to these people.

泽利泽发现有些寿险公司,通过改变营销思路克服了这个难题,他们告诉自己的推销员,不要试图给你的客户讲概率论

耶鲁公开课 - 金融市场课程节选

Election officials have indicated that computer servers overloaded but have yet to fully explain the problem.

NPR: Kenya Final Vote Total: Kenyatta Has 50.03 Pct

Election officials have indicated that computer servers were overloaded but have yet to fully explain the problem.

NPR: Kenyan Supreme Court Upholds Election Result

In one sentence, explain the problem your potential customers are experiencing.

FORBES: 'I Have No Idea What Your Company Does!' Five Steps To Clearly Explain Your Startup Idea