Plants naturally take in carbon dioxide they need for photosynthesis, the process of changing light energy to chemical energy.

VOA: special.2010.01.26

And for that I need to invoke the names of three giants.

为了做到这个,我需要提到三位伟人的名字。

麻省理工公开课 - 固态化学导论课程节选

but what works for me the best is to really step out of this sort of need to create

但是对我来说最有用的方法，就是要走出一种必需创造的意念

艺术从自由起步 - SpeakingMax英语口语达人

Yet sleep scientist Ying-Hui Fu at the University of California, San Francisco,says little is known about the basic need for sleep.

VOA: special.2009.08.26

But we need to add in homeland security event so let's find the event for Friday of the following week.

但我们要加入国家安全的时间,那么我们可以安排到,下星期五。

普林斯顿公开课 - 国际座谈会课程节选

The deputy executive director of UNICEF,Hilde Johnson, says the quake has only made the need for aid more immediate.

VOA: special.2010.02.15

You can even implement your own versions of some of the most popular console games today for which I need another volunteer.

现在你就可以编写程序,把当下最流行的控制台小游戏，改造成自己的版本,现在我需要再上来一名志愿者。

哈佛公开课 - 计算机科学课程节选

And it can limit the need for chemical fertilizers by letting animal waste do the job of natural fertilizer.

VOA: special.2010.01.19

2 7 And I'm not going to draw the rest of the tree for you here, because I drew it last time, and you don't need to see the whole tree.

从这儿我们得到了,我在这里不会剩下的树都画出来，因为我上次画过了。

麻省理工公开课 - 计算机科学及编程导论课程节选

said people need to exercise thirty minutes each day for at least five days to get the health benefits of exercise.

VOA: special.2010.06.08

The priests were able to construct a new identity and religion that stressed the sinfulness of the people, and the need for ritual purity and ritual observance and legalism as the road back to God.

这些牧师能够建造新的身份和宗教,强调人们的原罪，宗教圣洁和遵从律法的必要性,强调守法主义是重返上帝的必经之路。

耶鲁公开课 - 旧约导论课程节选

Studies have shown that over time, most humans need eight to eight and a half hours of sleep for the best health.

VOA: special.2009.08.26

So this is going to tell you pretty much everything you need to know in terms of getting ready for the exam, which is next Wednesday.

这上面包括了几乎,所有的你需要知道的,关于如何准备这次考试的信息，考试时间是下周三。

麻省理工公开课 - 化学原理课程节选

Scientists at the agroforestry center say the use of fertilizer trees can reduce the need for chemical nitrogen by up to three-fourths.

VOA: special.2009.09.01

One group of arguments for the existence of a soul says, "We need to posit a soul in order to explain something, whether it's something everyday or something supernatural."

主张灵魂存在的一方声称,我们必须假设灵魂存在,才能解释一些,司空见惯或是超自然的现象

耶鲁公开课 - 死亡课程节选

They say levels of a protein called Shh need to remain largely unchanged in a developing fetus for the palate to develop correctly.

VOA: special.2009.12.22

If I want to clone a gene from a human, if I want to clone the gene for human isulin, mean make many copies of the gene that's responsible for making insulin, I need to know whether there are introns there or not.

如果我想要从一个人类个体克隆基因,如果我想要克隆人类胰岛素基因,亦即我要把负责生成胰岛素的基因,复制许多个副本,我就得要知道哪些是内含子,哪些不是

耶鲁公开课 - 生物医学工程探索课程节选

They teach the need for farming to improve the environment and make good use of natural resources.

VOA: special.2009.04.14

And so he concluded, "I knew that I was a substance, the whole essence or nature of which is to think, and that for its existence, there is no need of any place nor does it depend on any material thing.

因此,他总结到,"我知道我是个实体,是思考主体的本质或本性,而这种思考主体的存在,无需任何空间,也不依赖于任何有形实体

耶鲁公开课 - 心理学导论课程节选

This form of grazing can reduce the need for pesticide treatments by reducing the growth of weeds.

VOA: special.2010.01.19

the fact that the only problem you're having is the lack of what your expressing and need for.

事实上，你唯一的问题就是你缺少或需要的东西仍未被满足。

I need 课堂 - SpeakingMax英语口语达人

The hunger for news of the Civil War in the eighteen sixties increased the need for reporters.

VOA: special.2009.04.20

But first we need to establish a few things about the occasion for this piece and about the genre, the literary genre of the mask in general.

但首先我们必须建立一些,关于此作品与流派，一般文学体裁《面具》的场合。

耶鲁公开课 - 弥尔顿课程节选

He stopped in many places to speak about the need for the League of Nations.

VOA: special.2010.11.18

And then next time, next Wednesday-- - because remember we're not meeting on Monday-- next Wednesday, I'll do a similar kind of lecture for everything you need to know about Ancient Judaism, to put the New Testament into its historical context.

下次课上，下周三-,周一没课-,下周三，我会讲你们需要了解的,古代犹太教的知识，将新约放在历史环境中进行研究。

耶鲁公开课 - 新约课程节选

"We'll need to wait for all the girls to enter puberty before we have a good grasp on what the contribution is of those environmental chemicals."

VOA: special.2010.08.18

It could be the letter understood either graphically or audibly, and the variety of ways in which one can choose a basic unit in the study of linguistics means that you need a special word for that unit, which is characteristically "the tagmeme."

它既可以以图像的方式理解，也可以以声音的方式，因为每个人研究时选取的,基本的语言学单位不一样,所以需要一个特殊的名词来指代这个单位，这就是，法位“

耶鲁公开课 - 文学理论导论课程节选

He said the North Korean launch proves the need for nations to cooperate to stop the spread of nuclear weapons and to remove those that already exist.

VOA: special.2009.04.11

so I'll need to do math and science classes for the rest of my college career.

所以我必须在我余下的学生阶段完成数学和自然科学的课程。

伯克利的课程计划 - SpeakingMax英语口语达人

And it is really great because he actually goes through the thought process for you and describes - I need to give you one piece of background.

它非常厉害,因为他已经将思考的过程,为你们过了一遍，并描写,我需要给你们一点背景介绍。

麻省理工公开课 - 固态化学导论课程节选