It's difficult for them to get here much before seven.

他们很难在7点以前早早地来到这里。

《牛津词典》

It is incredibly difficult to calculate how much dead stock currently goes to waste.

要计算目前有多少滞销库存将被浪费是极其困难的。

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Some San Jose residents say that as inequality has grown in recent years, upward mobility has become much more difficult to achieve.

圣何塞的一些居民表示，随着近年来不平等现象的加剧，实现向上流动变得更加困难。

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So they quickly passed a bill that made it much more difficult for Chinese citizens to come to live in the United States.

VOA: special.2010.03.11

Some people find that a psychologically difficult thing to accept, but I've believed that pretty much all my life, so I'm quite comfortable with it.

有些人会觉得心理上,很难接受这一点，但在我的人生中，我一直相信这一点，我也坦然接受这一点。

普林斯顿公开课 - 人性课程节选

the work doesn't seem to be that much more difficult from what's at other universities.

功课也没有比别的大学难很多。

对于赞助入学的看法 - SpeakingMax英语口语达人

It is supposed to be much more difficult to show a benefit in the "hard events"--heart attack, stroke and death--than in the broader swath of "extra" heart problems that AtheroGenics measured in its trial.

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"There are local factors in Syria that are going to make it much more difficult to have an effect -- the middle classes in Syria have yet to really throw their lot in with the opposition, " he said.

CNN: Syria, Yemen opposition warn dictators: You're next

Building the passionate sales force and a similar culture to Groupon would be much more difficult to achieve.

FORBES: Groupon Mania Drives Up Local.com, Supermedia Shares