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

VOA: special.2010.07.18

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

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

"The situation is somehow much more unknown to the Western world and was not particularly described in the media and it was particularly touching."

VOA: standard.2010.06.29

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

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

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

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

"You can have that test, but it can't be an exclusive test because of the nature of the patent laws which are to protect new and unknown inventions."

VOA: special.2010.07.16

Take these two equations, put an equal sign between them, replace this PR throughout with X, I'm going to have one equation and one unknown and that even the math phobics in the audience did in high school.

在这两个方程中间加个等号,将这里的Pr换成X,就会得到一个等式和一个未知数,剩下的问题,大家高中的时候就该回做了吧

耶鲁公开课 - 博弈论课程节选

Cattley succeeded in getting the unknown plant to flower.

VOA: special.2010.04.06

So what we're going to do is take the equations for those two lines, so here's one of those equations and here's the other one, set the P in those equations equal to X, I've got two equations in one unknown, I'm sorry, I've got one equation and one unknown.

接下来我们只需要,列出这两条线各自的方程,也就是这个方程和这个方程,把方程中的P换成X,我就得到了两个等式和一个未知数,错了,是一个等式和一个未知数

耶鲁公开课 - 博弈论课程节选

"It's also trying to overcome the fear of cholera, because it's a new disease and it's unknown and it strikes quickly,".

VOA: standard.2009.09.14

They killed 30 to 100 people and dumped most of the bodies in unknown locations.

VOA: standard.2009.09.07

After a stop to lay a wreath at Russia's Tomb of the Unknown Soldier, Mr.Obama will head to the Kremlin for a private meeting with Russian President Dmitri Medvedev.

VOA: standard.2009.07.06

The sport of cross country skiing is unknown. But he liked it so much after trying it that, "the next day I went to REI and bought the whole equipment."

VOA: standard.2010.01.22

Afghan and NATO officials say that Taliban insurgents in the northern Kunduz province were driving two hijacked fuel trucks to an unknown destination when fighter planes located them on a river bank and bombed them.

VOA: standard.2009.09.04