Scientists have a harder time quantifying these risks.

科学家们很难给这些危害定量。

She tried very hard to doze off.

她拼命想尽快入睡。

It beautifully illustrates a concept so hard to explain.

它完美地诠释了这难形容的概念。

If a dress works, you work it hard.

如果一件衣服穿起来好看 那是你下了功夫。

We are hitting ISIL harder than ever.

我们对ISIL的打击力度任何时候都要强。

Perhaps try knocking a bit harder this time.

或许这次可试着更用力敲哦。

OK, keep practising before you try anything harder.

好的，在你尝试任何困难之前，坚持练习。

As founders we need to work even harder.

“为创始人，我们更需要努力工。

It's hard to hold onto this feeling, really hard.

坚持这种想法很难，真的很难。

They should have studied a little harder in school.

他们其实应该在学校里好好学习的。

The great recession hit young people harder than others.

经济大衰退对年轻人的冲击最为严重。

God, it's getting harder and harder to keep her at arm's length.

天啊 要跟她保持距离越来越难了。

Okay, different nationalities will find pronouncing different phonemes harder than others.

好的，不同国家的人会发现发出不同的音素其它的要难。

The harder the men pushed, the harder he held back.

人们越是用力推，它越是向后撑。

He ramps up production, pushing his men harder than ever.

他开始增加产量让工人更加努力地工。

Try to make a moment but don't try too hard.

把握瞬间但别太刻意。

Maybe if you try to blow a little bit harder, Darling.

也许如果你想吹得更用力一点，亲爱的。

General Cooper says budget cuts have made his job much harder.

库珀中将表示，国会缩减预算让他的工更加棘手。

Understanding all aspects of social media is a whole lot harder.

要对它了解透彻却很难。

Set it a little harder and then land hands in front.

再用点力，然后手放前方着地。