Although they might be on opposite sides of the issue, Kyle Hoefling agrees that overturning the new law would be difficult.

VOA: standard.2010.03.25

I'm not going to have you work long hours on difficult problems to be submitted and then graded.

我的作业不会让你们花费大量的时间,去钻研很难的问题，然后交上来让我打分。

麻省理工公开课 - 固态化学导论课程节选

And if they're a premade salad then it would be even more difficult because you're not constructing it yourself, so it's hard to uses based on these sort of things.

如果那是预制色拉,就更麻烦了,因为那不是你做的,就很难进行统计

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

"I think that would be difficult to achieve at Fort Hood, given the national media attention that has been focused on the Fort Hood community,".

VOA: standard.2009.11.10

Whether it gets outweighed easily, or whether it's very, very difficult and the contents have to be horrible to outweigh it, depends on how much value you think being alive per se has.

不管是轻易被超越，还是它很困难被超越,还是生活内容要非常糟糕才能超越它，这取决于你认为生活本身有多少价值。

耶鲁公开课 - 死亡课程节选

"People are going to see more security." But Steve Coll says the success of the Kandahar offensive really hinges on a psychological battle that will be more difficult to win.

VOA: standard.2010.05.28

"If the current posture of the Israeli government on Gaza continues it would not be difficult to predict that Turkish and Israeli relations will continue to be difficult and fragile,"

VOA: standard.2009.10.27