So an astronaut on the flight of Gemini Four, Ed White,took that first frightening step into the unknown.

VOA: special.2009.07.01

- "She lived unknown and few could know"-- how can she be unknown if few know anything about her?

她不为人知地活着，鲜有人知道她“,如果有任何人知道关于她的任何事情,又怎么能说他不为人知呢？

耶鲁公开课 - 文学理论导论课程节选

A kind of a pin used to hold your cloak together, called a fibula, unknown in the previous period.

一种别住披风的别针,称之为扣针,这在之前的时期从未出现过

耶鲁公开课 - 古希腊历史简介课程节选

And the strong man, still holding the small child, drifted away on the shadowy river that flows forever to the unknown sea.

VOA: special.2009.06.06

I could take an unknown gas and put it in and measure it and then say, wow, those are the lines that are characteristic of sodium.

我取一种未知气体，把它放到管里,然后检测它，哇，这些线是钠的特征。

麻省理工公开课 - 固态化学导论课程节选

The exact cause is unknown. But in a recent study, an experimental drug showed signs of halting the disorder in laboratory mice.

VOA: special.2010.05.19

The mathematical theory of probability was unknown until that time and you can see that insurance suddenly made an appearance at that time.

在那之前,概率的数学理论,是不存在的,而随着概率论的出现,保险业也突然出现了

耶鲁公开课 - 金融市场课程节选

Ed White would leave the protection of the spacecraft and move out into the unknown emptiness of space.

VOA: special.2009.06.24

That in the matter of honor these men practice delicacies and refinements unknown in the North.

他们对于荣誉有着雅致,而高尚的追求,这是北方人难以企及的

耶鲁公开课 - 美国内战与重建课程节选

Not only did the always interesting Lady Gaga show up inside a large egg-like structure, but unknown artists also won top prizes.

VOA: special.2011.02.18

I've set these two things equal to each other: I've got one equation and one unknown.

我让两个方程相等,只剩下了一个等式和一个未知数

耶鲁公开课 - 博弈论课程节选

It has some grammar structure and words from several other languages that are unknown or that have disappeared.

VOA: special.2009.12.02

Holy Peter holy Allen holy Solomon holy Lucien holy Kerouac holy Huncke holy Burroughs holy Cassady holy the unknown buggered and suffering beggar holy the hideous human angels!

神圣的彼得神圣的艾伦神圣的所罗门吕西安凯鲁雅克,神圣的汉克神圣的宝来神圣的凯萨迪神圣未知的同性恋,受苦的乞丐神圣丑恶的人类天使！

耶鲁公开课 - 1945年后的美国小说课程节选

The expression probably began because the jungle is filled with wild animals and unknown dangers that threaten people.

VOA: special.2010.05.16

That's how by either balancing the unknown force with a known force or by simply measuring the acceleration as I fall towards this podium and multiplying by mass, you can find the force that exerts on me.

我们既可以让未知力与已知力平衡,也可以只测量我冲向讲台时加速度的大小,再与我的质量相乘,都能求出作用在我身上的力的大小

耶鲁公开课 - 基础物理课程节选

Then on April thirtieth, two thousand seven,a huge fire of unknown cause almost completely destroyed South Hall.

VOA: special.2009.08.21

Well let's talk about some mechanisms for using this and I'll start with a simple example of how one can detect a gene in a fluid, in a blood sample for example, where that gene is unknown.

我们来说说这项技术在实际应用中的机制,先从一个简单例子着手,如何在一个血样中,侦测是否存在某段基因序列,某段未知基因序列

耶鲁公开课 - 生物医学工程探索课程节选

Their ancient languages contain a great deal of information about environmental systems and species of plants and animals that are unknown to scientists.

VOA: special.2009.12.02

Platinum was unknown until the Spanish came to South America.

铂被人所知,是直到西班牙进入南美洲之后。

麻省理工公开课 - 固态化学导论课程节选

If hoarseness continues or the cause is unknown, doctors should perform an examination called a laryngoscopy.

VOA: special.2009.09.02

That put us at, sort of, organization on the data entry that was unknown.

这有点像是，组织我们进行某种资料登录。

耶鲁公开课 - 金融市场课程节选

And they feel that unknown dangers in the business world threaten the survival of their business.

VOA: special.2010.05.16

Therefore, it'll compress by an unknown x, which is equal to mg divided by the force constant of the spring.

因此它的压缩量为 x,也就等于 mg 除以弹簧的弹性系数

耶鲁公开课 - 基础物理课程节选

They gave a name to this mysterious continent: Terra Australis Incognita, or the "Unknown Southern Land."

VOA: special.2009.06.03

If you do that, you will find there is one unknown, which is v0, and we can solve for v0.

这样就只剩下一个未知量了,也就是 v0,我们就能解出 v0

耶鲁公开课 - 基础物理课程节选

She died in eighteen eighty-six, at the age of fifty-five, completely unknown to the world.

VOA: special.2010.07.18

You can use PCR for fingerprinting as well, for looking in some unknown fluid for example, is a gene that I'm interested in there?

也可以用PCR做生物指纹鉴定,比如在一个未知溶液样本中,里面是不是有我感兴趣的那段基因呢

耶鲁公开课 - 生物医学工程探索课程节选

The song is about driving by yourself at night into the unknown and feeling free.

VOA: special.2010.05.28

So, what we have found out so far, I'm purposely going from x to y because I want you to know that the unknown variable can be called an x or can be called a y.

到目前为止,我们有这些结论,我特地把x换成y,因为我想让你们明白,未知变量既可以写成x,也可以写成y

耶鲁公开课 - 基础物理课程节选

There's only one unknown a.

所以只有一个未知量,a

耶鲁公开课 - 基础物理课程节选