It s hard to fathom that Apple opened its app Store less than two years ago, and already it offers more than 140, 000 apps.

不到两年前苹果公司的苹果应用程序商店(App Store)的开业还让人摸不着头脑，而现在该商店已经能提供超过14万种应用程序。

youdao

It 's hard to pilot a vessel in rough weather.

在大风浪中为船舶引航是很困难的。

youdao

It 's hard to believe, but we did it.

难以置信，但我们做到了。

youdao

Like many of U2's songs, it is an expressive love song with a melody that is hard to forget.

VOA: special.2009.04.10

PROFESSOR BAWENDI: The only But it's hard to imagine an irreversible compression the way we can just imagine an irreversible expansion.

,但是我们很难,像描述不可逆膨胀一样,来描述不可逆压缩。

麻省理工公开课 - 热力学与动力学课程节选

And once you... when you're having that bad of a season, it's really hard to get everyone passionate about it,

所以一旦赛季取得很差的成绩，就很难保持球队的激情，

足球部队长的领导力 - SpeakingMax英语口语达人

And that's what we have to remind ourselves, especially when it's hard -- especially when it's hard.

WHITEHOUSE: President Obama Takes Questions from Senate Democrats

"It's really hard, it's really hard, " Noah said Friday.

WSJ: Postseason goes to Brooklyn, and Noah may miss it

"It's really hard, it's really hard, " he said.

WSJ: Noah's status for Bulls in question