But it is hard to do in practice.

但是太难在实践中做到。

youdao

I try to give my son a good education, although it is hard to do in this country.

我试着给我儿子最好的教育，尽管在这个国家很难做到。

youdao

Tom keeps it so simple and it is hard to do that when you're in centre-midfield, but Tom does that.

汤姆一直让它简单，当你在中场时很难做到这一点，但他做到了。

youdao

Soon after Call and Caroline were married, the Captain said to me, "This is hard for you,isn't it?What is it you really want to do?"

VOA: special.2009.02.14

But another possibility is once you do something it's kind of hard to stop.

但也有可能是因为,婴儿很难使自己的惯性动作停下来

耶鲁公开课 - 心理学导论课程节选

And the question that preoccupies developmental psychologists is how do we come to have this knowledge, and in particular, how much of it is hard-wired, built-in, innate.

发展心理学家们所关心的问题,就是我们如何获得这些知识的,特别是,这其中有多少是固有的,内在的,天生的

耶鲁公开课 - 心理学导论课程节选

Now, let me acknowledge what everybody understands: It is hard to do a big package.

WHITEHOUSE: President Obama��s News Conference on Deficit Reduction

Turning a solid material like coal into a liquid it sounds hard to do, and it is hard to do.

NEWYORKER: Unconventional Crude

Because it is hard to do well, it is a way of demonstrating your fitness to be someone's mate.

ECONOMIST: The biology of music | The