However, getting one carbon atom to bind to another is often not an easy task.

Trying to bring up a small child on your own is no easy task.

要自己抚养一个小孩不是件轻松的工作。

It's not an easy task, and I'm sure every one of us has tried to quit something and failed, or tried to do something positive and failed.

这绝不是一件容易的事，我相信每一个人都曾有过努力戒掉某种习惯但是最终失败，或者曾经尝试积极的进步同样失败的经历。

Maintaining regular and open communication among the worldwide branches of a multinational company is no easy task.

维持全球的分支机构之间定期和开放的信息交流对一家跨国公司来说绝非易事。

The schedule planning is the most important task of the project management.

因此,论文对六沾复线勘察设计项目进度控制的研究有着重要的现实意义.

He is too young to be responsible for such an important task.

他太年轻了,不能负责这样重要的工作.

Choosing the life distribution is an important task for reliability analysis.

寿命分布类型的优选是产品可靠性分析的重要课题.

Determination of blank shape is an important task in deep drawing process.

确定坯料外形是拉深件工艺设计中的一项重要工作.

This is an important task of the Western China Development Office.

这是今年西部开发办的一项重要工作.

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

罗马不是一天建成的(伟业建成非一日之功).

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.