Mercury is a liquid metal, and mercury, the planet, is the fastest moving naked eye heavenly body. Mars, iron, why is Mars red?

水银是液态金属，水银，行星，是肉眼能看到的运动最快的天体,火星，铁，为什么火星是红色的？

麻省理工公开课 - 固态化学导论课程节选

celebrating the beauty of the planet.

庆祝我们这个星球的美丽。

关于世界地球日 - SpeakingMax英语口语达人

You bring iron ore from one part of the planet, carbon, limestone, you put it into this reactor and you ship this all over the world.

你得到钢铁从地球的一个地方，还有碳，石灰岩，将它们放入这个反应器,你将它运送到世界各地。

麻省理工公开课 - 固态化学导论课程节选

And they were kind enough to send us this magnetic tank which we'll call forth from the computer solutions to a series of problems that would occur on a simulated flight to the planet Saturn.

他们很友善，送给我们这个有磁性的水槽,用于计算机解决一系列,土星模拟飞行中,可能出现的问题。

哈佛公开课 - 计算机科学课程节选

And fortunately, there is a community at Yale of the best scholars and teachers on the planet.

幸运的是,在耶鲁有一个团队,那里有世界上最优秀的学者和老师

耶鲁公开课 - 心理学导论课程节选

My bid concern is that you have this huge group of people on the planet 2 young people between ages of say 12 and 19 or 21 or 22 all asking the question: Who am I?

我最关注的是,我们在世界上拥有如此巨大的一个群体,即年龄介于12到19岁，或者21，22岁的青年人2,都在问一个问题：,我是谁？

普林斯顿公开课 - 人性课程节选

But smallpox was, at one time, one of the most frightening diseases on the planet.

但是天花曾经,是这个星球上最令人恐惧的疾病之一

耶鲁公开课 - 生物医学工程探索课程节选

I actually believe in the history of the planet, there are very, very few instances of people getting paid for taking risk; they get paid for eliminating it.

我一直相信在人类的历史上，有非常少的例子来证明人们,因为承担风险而获得了收益；,他们是因为规避了风险而收益。

耶鲁公开课 - 金融市场课程节选

It doesn't rely on gravity. It doesn't rely on the planet.

这不需要依赖重力,不需要依赖地球

耶鲁公开课 - 基础物理课程节选

He journeys heroically through chaos in order to find that new planet that he had heard about in heaven, and he's stopped by a figure who holds the keys to hell's gate and who can determine who is able to leave and who is able to enter.

他英勇地穿越过混乱以找到他在天堂听闻过的新星球,他被一个人拦下了,这个人掌管着地狱大门的钥匙并能决定,谁能够从此间进出。

耶鲁公开课 - 弥尔顿课程节选

Earlier this summer I was at a smelter in Japan, the largest titanium smelter on the planet.

早在这个夏天我去了日本一家熔炼厂，那是全世界最大的熔炼厂。

麻省理工公开课 - 固态化学导论课程节选

And so, when you think about how much cement concrete are consumed annually on the planet, this becomes a considerable point source of greenhouse gas emissions.

当你想到,在地球上每年要消耗多少的水泥混凝土的时候,这将是温室气体排放的,一个主要来源。

麻省理工公开课 - 固态化学导论课程节选

They are kept track of very closely, but because there's still smallpox that exists on the planet, there is some concern that that could be obtained and used to develop a weapon.

并且科学家们仔细记录病毒的使用情况,但因为这星球上仍存在天花,就会有人担心,某些人会获得天花病毒,并将其制成武器

耶鲁公开课 - 生物医学工程探索课程节选

Depending on how far the planet is from the Sun and where it's located, you will get the left-hand side.

取决于行星到太阳的距离以及行星的位置,你就能列出等号左边的式子

耶鲁公开课 - 基础物理课程节选

There are three places on the planet that have the high energy physics equipment in order to make these, and these are the three places.

在地球上有三个地方,有高能物理设备,为了制造出这些元素，有三个地方。

麻省理工公开课 - 固态化学导论课程节选

Suppose the planet were hit by a comet-- this happened--something like this happened sixty-five million years ago, so it could happen again.

假设这个星球被一颗彗星击中-,这样的事，大约六千五百万年前,发生过，所以它还可能再发生。

耶鲁公开课 - 金融市场课程节选