It is not easy to provide an exact history of the street art movement.

VOA: special.2009.04.08

It is not easy to say,what is the right thing,or what is the wrong thing.

我们不能简单地说,什么是对的,什么是错的

耶鲁公开课 - 古希腊历史简介课程节选

it's very easy to know that this is not a student's authentic writing.

所以，很容易辨认出这不是学生自己写的。

对于抄袭的想法 - SpeakingMax英语口语达人

However,sometimes it is not easy to learn about these artists.

VOA: special.2009.11.25

It's a transition, an evaluation of marriage that is not at all an easy one, however. There are debates.

这是一种转变，对婚姻的评价,那并不是一个简单的转变，当时也有争论。

耶鲁公开课 - 弥尔顿课程节选

It is not easy to quit smoking.

VOA: special.2010.03.09

He feels that a variety of sorts of clinical evidence at his disposal warrant the distinction, but it is not an easy one.

他觉得很多,临床证据都可以证明二者不同，但是这并不简单。

耶鲁公开课 - 文学理论导论课程节选

"He knows that this suspension of settlement construction is difficult, that it is not easy for anyone;

VOA: standard.2010.01.03

Often, for a particular state change, it is easy to calculate two of these, but not the third.

对于一些特定的状态变化，它们中的两个很好计算，但是第三个往往不容易计算。

麻省理工公开课 - 热力学与动力学课程节选

They act as if they are giving us charity,she says. So really it is not easy.

VOA: standard.2009.08.27

And it is not always easy to answer, because sometimes they do not always make their deepest or most fundamental questions altogether clear.

答案并不总是简单的，因为有时候它们不总是,让那些最深刻和最基础的,问题一起清楚地呈现。

耶鲁公开课 - 政治哲学导论课程节选

But it is not easy to get at. Specks of gold embedded in the mountain rock can only be extracted by blasting and crushing the rock to powder.

VOA: standard.2010.04.22

But it's not an easy task. Silicon Valley is very unique.

但这并不容易，硅谷是独一无二的。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

Experts in photography say it is easy to tell that the photo was not posed.

VOA: special.2010.05.31

It's not easy to devise this and the concept is very simple.

设计保单并不那么容易,仅仅一条概念太单薄了。

耶鲁公开课 - 金融市场课程节选

It is not an easy thing to do.

VOA: special.2009.06.29

That's an important observation, and as we get to the part of the course we talk about computational complexity, you'll see that what we really care about is not how efficient the program is on easy problems but how efficient it is on hard problems.

我们已经学习了这门课程的一部分了，我们要开始认识到,计算的复杂度这个概念，你会学习到我们在乎的并不是,算法在简单问题上的工作效率,而是解决复杂问题的效率。

麻省理工公开课 - 计算机科学及编程导论课程节选

It is not normal to have just a smooth, easy ride through a World Cup qualifying.

VOA: standard.2009.06.07

It is not about making the material relevant and easy to apply in given opportunities to do that. It is not about creating interaction in community.

不是整理相关材料,以便于时机适宜时容易,利用，不是,在社群内进行互动。

麻省理工公开课 - 媒体、教育、市场课程节选

It is not an easy task,she said. "This is going to be a very hard act for him to pursue, particularly when there is very, very deep hostility to the United States and to the West more generally in Pakistan."

VOA: standard.2010.08.06

And it may not be easy, but change is coming." After criticism from Republicans and some Democrats that he was concentrating too much on health care reform and not enough on the economy, Mr.Obama has devoted many of his recent public statements to economic issues.

VOA: standard.2010.02.06

"If the image of the company is not satisfactorily strong in the public sentiment's mind it's easy for agents to whip up community outrage through the Internet through e mail, what have you, so the newspapers pick it up and say the foreign company is out to take advantage of Korea,".

VOA: standard.2009.11.05

"This is not a particularly easy case, because it sets out, or calls to question a number of legal issues that have to be examined, that have to really be given legal treatment for them to arrive at a decision that is legal in the eyes of the region and the eyes of the international law,".

VOA: standard.2009.04.18