Time and hard work are necessary for a difficult or important task.

Hence, studying common words is also article's important task "

所以,考订 俗字, 也是本文的重要内容.

To develop economy is the most important task for China economic change.

经济转型期的中国,发展是首要目标.

Association rule mining is an important task of data mining.

关联规则是数据开采的重要研究内容.

With the development of network technology, computer cryptology become a important task.

随着网络技术的发展, 计算机密码学已经成为科研人员日益关注的课题.

He was given an important task.

他被委以重任.

The boss forced this difficult task upon him.

老板强迫他做此难事.

The chief set me a difficult task.

上司派给我一件棘手的工作.

They have attempted a difficult task.

他们已经开始了一项艰难的工作.

You have attempted a difficult task.

你试图做一项艰难的工作.

My question is what was the most difficult task for you?

请问过去一年让你最感困难的是什么?

We have to leave that difficult task for the director to do.

我们不得不把那件困难的工作留给主任去做.

There remains a still more difficult task for us.

还有一项更艰苦的工作需要我们做.

As important as selection of managers is, it is an extremely difficult task.

选择管理者是重要的, 但是同时也是极其困难的事情.

She had the difficult task of pulling out all the weeds.

她的苦差事是拔除所有的杂草.

You are just practicing your religion, and while you are at it, why not do some multi-tasking? You want to find the person of your dreams?

你只是在实践自己的信仰，而既然你都这么做了，那为什么不一石二鸟呢？

Anti-pattern: Source files stay checked out of a repository for long periods of time due to the amount of changes required for tasking.

反模式：由于所需的修改太多，源代码长时间签出存储库。

Because on the contrary, multi-tasking can be a useful way to make the most of time that would have otherwise been used inefficiently.

因为与之相反，有时多重任务可以让你充分利用那些本来不能得到有效利用的时间。

It will take a little while for you to get used to single-tasking, if you are used to jumping from one thing to another and back.

如果你习惯于从一件事跳到另一件事，然后又跳回来，那你可能需要一段时间才能适应单一作业。

Multi-tasking; it seems that people are going to have big debates about this topic until the end of time.

多重任务处理；我想，在这篇文章过后，对于这个话题将会产生很多激烈的讨论。

The objective is to optimize the working revs area to make the engine work around the lowest consumption revs.

我们的目标是优化工作转速范围，使周围的最低消费转速发动机工作。