It can be difficult to ascertain the facts.

可能难以查明事实真相。

《牛津词典》

The legislation will be difficult to enforce.

这一法规将难以实施。

《牛津词典》

It can be difficult to find a good babysitter.

可能难以找到一个好的临时保姆。

《柯林斯英汉双解大词典》

An extremely low body temperature can cause the heart to beat so slowly that a pulse may be difficult to find.

VOA: special.2009.12.30

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

it would be difficult to leave right away.

一时半会儿肯定没法走，

I'm going实战 - SpeakingMax英语口语达人

Such attacks are not necessarily a criminal offence and it can be difficult to bring prosecutions.

BBC: Owner of attacked guide dog calls for law change

Such variety might be difficult to arrange in London, New York, Silicon Valley, or Mumbai.

FORBES: Where Do Bankers Smile? On The Davos Party Circuit

It can be difficult to draw conclusions based on these reports, because they are random.

FORBES