There is not a simple answer. It depends on the subject and level of students,of course.

VOA: special.2009.12.17

C So, that's the breakdown. And, the grade is C level, 50% and it's based upon a performance of 50% absolute.

这些就是分类，分数是，那就是基于成绩的。

麻省理工公开课 - 固态化学导论课程节选

And with the ultimate goal of teaching it at a university level, hopefully at a school like Columbia

我最终的目标是在大学教书，很希望能在像哥伦比亚这样的大学，

什么事情都是可能的 - SpeakingMax英语口语达人

This might be a greater magnitude and level of corruption, because of drug cartels.

VOA: standard.2009.12.18

I want to go back to our energy level diagrams and see if I can rationalize energy level diagrams.

让我们往回看，回到我们的能级图表,来看看我是否能使能级图表合理化些。

麻省理工公开课 - 固态化学导论课程节选

"On the Internet, the other side is trying to exploit people's feelings, and they give them instructions on how to do wrong things and we have to give (them) tools and manuals also on how to stay cool and level-headed and stay reasoned and don't get yourself and others in trouble,".

VOA: standard.2009.12.20

I've always been the kind of person who cared deeply about what happened at the national and international level.

我一直十分关心,国内国际发生的时事。

普林斯顿公开课 - 人性课程节选

Secretary Clinton said donors and the government of Haiti showed a new level of international support, coordination and cooperation.

VOA: special.2010.04.02

But as part of a more rigorous introduction to understanding how the machines work and writing programs at this lower level.

作为一种,理解电脑工作机制,和在低平台上编程的入门方法。

哈佛公开课 - 计算机科学课程节选

Experts say the ability to take up lead is reduced when the pH level is above six and a half.

VOA: special.2009.06.09

That represented 10% of revenues and that was the lowest level for the entire century -the entire twentieth century--10% of revenues.

占了收入的10%,这个比例是整个20世纪的最低水平,收入的10%

耶鲁公开课 - 金融市场课程节选

They have a material that supplies electrons and a power source that lifts the energy level of those electrons.

VOA: special.2010.09.01

That rate of rise is steeper so they--antibody levels go up more rapidly and they reach a higher level.

同时,上升速度也更加迅速,以达到更高的浓度水平

耶鲁公开课 - 生物医学工程探索课程节选

They answered questions about their level of physical activity as teenagers and at age thirty, fifty and late in life.

VOA: special.2010.07.07

Initially when we go to a warm place, we feel the relief and there's this spiky level of wellbeing.

刚去到一个温暖的地方，会感到放松，幸福水平高到值峰。

哈佛公开课 - 幸福课课程节选

Others said that he was chosen for his communications skills and educational level and because he was an established sports star.

VOA: special.2009.04.05

And instead of having the electron giving off energy as a photon, instead now the electron is going to take in energy from light and move up to that higher level.

与电子以光子形式施放能量不同,我们现在要从光中,获得能量到一个更高的能级。

麻省理工公开课 - 化学原理课程节选

She says that Earth Day is still very much about activism and fighting for the environment on a local level.

VOA: special.2010.04.21

Let's think about it in terms of the local level and then perhaps the national and international level.

让我们来基于本地,全国，全球来想一想。

麻省理工公开课 - 媒体、教育、市场课程节选

One sports writer later described Clemente's throwing, running and hitting during the World Series as close to the level of perfection.

VOA: special.2010.04.11

It takes work both at the individual level and it takes work at the group level.

不仅个人需要下功夫,群体也要下功夫。

耶鲁公开课 - 心理学导论课程节选

Dr.Chan says the WHO is no longer operating "at the level of top performance that is increasingly needed,and expected."

VOA: special.2011.01.19

There's definitely some inverse correlation between your level of thinking and the proximity to the blackboard.

在你的思维水平,和到黑板的距离之间,绝对存在某种反比关系

耶鲁公开课 - 基础物理课程节选

On a passenger cruise ship, fresh air is available on decks and in other places above sea level.

VOA: special.2009.07.14

The Presbyterians needed to halt the endless generation of dangerous religious propaganda and continued what they felt on some level was the continued metastasis of Protestant sects.

长老派需要停止无穷无尽不断产生的,危险的宗教宣传,继续他们认为的在一定程度上,继续转移的清教徒派系。

耶鲁公开课 - 弥尔顿课程节选

Bob McDonnell said Democrats are spending too much and creating a level of debt that cannot be supported.

VOA: special.2010.01.30

They're aspects of demand for performance at the highest level, and at the time there is a great deal of blaming people for pursuing such things instead of humility.

它们是一方面要求最高水平的出色表现,而又时不时针对人们,追求表现而忽视谦卑的行为进行大量的批判

耶鲁公开课 - 古希腊历史简介课程节选

He says that teenagers should set the volume control on their music players to somewhere between one-half and two-thirds the highest level,never louder.

VOA: special.2010.09.28

Even if quantum mechanics was wrong and somehow, you know, at the macro level all the indeterminism boils out-- whatever-- and at the macro level we are deterministic systems, so what?

即便量子力学是错的,而且不知怎的,在宏观水平上,所有的非决定性都蒸发了,不管发生了什么,在宏观水平上我们都成了决定论的系统,那又如何

耶鲁公开课 - 死亡课程节选

And what the Republic tries to do is to offer us strategies, maybe we might even call it a therapy, Thumos for dealing with thumos, for submitting it to the control of reason and helping us to achieve some level of balance, of self-control and moderation.

而《理想国》尝试做的是,提供我们策略，而我们甚至能称之为疗法，用以处理，让它接受理性的控制,并助我们达到某种程度的平衡，介于自控与节制之间。

耶鲁公开课 - 政治哲学导论课程节选