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

VOA: special.2009.06.24

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 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

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

VOA: special.2010.05.16

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

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

VOA: special.2010.05.16

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

VOA: special.2010.05.28

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

"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

books that are out of print and still under copyright, but the current holder of that copyright is unknown.

VOA: standard.2009.12.31

"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

"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

Diakite,who is also known as Toumba, escaped the attack and is still at large with an unknown number of soldiers from the presidential guard.

VOA: standard.2009.12.07

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

VOA: standard.2009.09.07

The plan follows months of deadlock over Iran's nuclear program and the recent discovery of a previously unknown nuclear-enrichment plant near the Iranian city of Qom.

VOA: standard.2009.10.19

(Choral music) On a cold and gray morning, German Chancellor Angela Merkel and French President Nicolas Sarkozy together rekindled a flame before the Tomb of the Unknown Soldier near the Champs Elysees.

VOA: standard.2009.11.11

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