In itself, it's not a difficult problem to solve.

这本身并不是个难解决的问题。

《牛津词典》

Objective assessment of the severity of the problem was difficult.

难以客观判定该问题的严重性。

《牛津词典》

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》

But for people who have a difficult time controlling their movements, this little navigational issue can be a really big problem.

VOA: special.2011.04.18

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

Well, I talked about the problem of using plasmids in gene therapy, that it's very difficult to get them into cells.

我们之前讨论过,基因治疗中运用质粒的问题,质粒本身极难进入细胞

耶鲁公开课 - 生物医学工程探索课程节选

Detective Superintendent Chris Bourlet of the Met's Child Protection Central Command told Newsnight reporter Angus Stickler the scale of the problem was difficult to determine.

BBC: NEWS | UK | Call for action on child exorcism

The health care problem is made vastly more difficult by the immigration problem.

CNN: A GOP Contract with America for 2010

Brazile recalled this as the precise moment when she knew Daley could tackle any difficult problem.

CNN: Daley gets down to business