If the water's cloudy like that, it'll be hard to see anyone underwater.

如果水浑浊成那样，就很难看得到水下的人。

《柯林斯英汉双解大词典》

A topic-based approach can be hard to assess in schools with a typical spread of ability.

在以典型的能力多元化为特征的学校里很难评估一种基于话题的教学方法。

《柯林斯英汉双解大词典》

Food safety is another problem: it can be hard to know where the food comes from.

食品安全是另外一个问题：很难知道食品来源。

youdao

This might be hard to do when the teacher is writing on a board at the front of the classroom.

VOA: special.2009.09.06

It might be hard to mesh this with the conception in which all actions are the result of neurochemical physical processes.

将上述事情,与所有的行为,都是神经化学生理过程的结果,这样的概念联系在一起是有些困难的

耶鲁公开课 - 心理学导论课程节选

So I think it would be hard to plagiarize

所以我觉得很难抄袭，

抄袭是很严重的问题 - SpeakingMax英语口语达人

U.N. officials privately acknowledge this is a big number that may be hard to fill.

NPR: U.N. Weighs Force to Protect Darfur Aid Efforts

It would be hard to imagine Blade Dynamics testing in a GE or Siemens lab.

FORBES: Connect

"I knew it would be hard to make something possible for this year, " Conway said.

NPR: Conway Wins 1st Of 2 Races At Detroit Grand Prix