Deliberate practice is hard mental work.

刻意练习是艰苦的脑力劳动。

Limit Your Sessions to Focus Deliberate practice is hard mental work.

集中注意力训练刻意练习是艰苦的脑力劳动。

Researchers found reactions to be significantly decreased at higher noise levels for both physical and mental work.

研究人员发现，不管是体力还是脑力劳动时，较高的噪音环境都会使反应能力明显下降。

I'm really talking about the hard mental work.

我真的在谈论艰苦的脑力劳动。

On the other hand, being skeptical and analytical takes more mental work.

另一方面，怀疑和分析需要更多的脑力劳动。

He seldom has much good mental work or recreation in the way of books.

他很少以读书的方式进行脑力劳动或消遣。

Even purely mental work can suffice as an outlet, as aptly expressed by the phrase sinking one's teeth into a problem.

即便是纯脑力活也足以让他们挥洒激情，恰如短语表达的那样，全身心投入问题中。

Scrolling down a page takes a lot more mental work than reading a page that's not moving.

向下滚动页面比阅读不动的页面需要更多的脑力劳动。

When these new information and communications consoles are available, almost anybody who does any kind of mental work can live wherever he pleases.

当这些新的信息和通信控制台可用时，几乎任何从事任何脑力劳动的人都可以随心所欲地生活。

So again, when she gets to the next sentence, she uses " mental work" and that's the exact same phrase she used in the topic sentence.

所以，她在下一句话中使用了“mental work”，这和她在主题句中使用的一样。

This is mental work, and a child who doesn't have a motive to speak a language- either a need or a strong desire- will often avoid it.

这是一种脑力劳动，而一个没有需求或强烈愿望作为动力的孩子将会经常避免这种脑力劳动。

That summarizes the argument in the in the rest of the paragraph: First of all, most people work indoors and want to have a break from mental work.

首先，大多数人在室内工作，希望能从脑力劳动中得到休息。

When first I knew him, Ryecroft had reached his fortieth year; for twenty years he had lived by the pen. He was a struggling man, beset by poverty and other circumstances very unpropitious to mental work.

当我第一次认识他时，莱克罗夫特已经四十岁了。二十年来，他一直靠笔为生。他是一个挣扎的人，被贫困和其他非常不利于脑力劳动的环境所困扰。

This is not conducive to oh, a scientific revolution, the rise of capitalism. Manufacturing. Manufacturing. And so when you're moving to a place where mental work becomes more important than physical work, you need a drug that helps you to focus.

这不利于哦，科学革命，资本主义的兴起。制造业。制造业。所以当你搬到一个脑力劳动比体力劳动更重要的地方时，你需要一种药物来帮助你集中注意力。

Test yourself again at the end of the day, by asking yourself: " Just how tired am I? If I am tired, it is not because of the mental work I have done but because of the way I have done it" .

5. 在一天结束时再次测试自己，问自己：“我到底有多累？如果我累了，那不是因为我做了脑力劳动，而是因为我做事的方式”。