And he vows to establish a valid legal framework for the continued detention of the most dangerous detainees.

VOA: standard.2009.05.21

And the last thing we do for any of our structures to check them and figure out are these valid or not valid, are these good Lewis structures is to check the formal charge.

而为了检验任何一个结构是否有效,看它们是不是好的路易斯结构,我们要做的最后一件事就是检查形式电荷。

麻省理工公开课 - 化学原理课程节选

What must this experiment have the potential to do, to be a valid scientific experiment?

实验必须有做什么的能力,才能被称为一个有效的科学实验呢？

麻省理工公开课 - 计算机科学及编程导论课程节选

"We all know that contracts are valid in this country, but they need to be looked at,"

VOA: standard.2009.03.15

if the Law of Inertia is valid for me, it's valid for other people in the same room at rest with respect to me.

如果惯性定律对我适用,那就对这屋子里的其他和我保持相对静止的人,也同样适用

耶鲁公开课 - 基础物理课程节选

White House Press Secretary Robert Gibbs said Wednesday no Iranians have responded to the invitations thus far, and that in any event they are no longer valid.

VOA: standard.2009.06.24

But when you start writing programs, especially when we get to web-based stuff where you want -- to check the user's input -- is it valid, is it an email address, -- and all these different scenarios -- it's actually often useful to be able to just enumerate them or rattle them off using this switching construct instead.

但是当你看是写程序时，特别是当我们,使用基于网络的东西，你想要,检查用户的输入-,它是合法的吗？它是不是一个电子邮箱地址？,所有的这些场景-,实际上它常常是有用的，当你用枚举结构列举它们,或者用它来快速地来说出它们。

哈佛公开课 - 计算机科学课程节选

"Definitely being in a different country and learning about American culture, American education system and everything else geting a degree here will definitely be valid back in my country so I am very lucky to be here and my goal right after graduation I want to look for some sponsorship opportunities and also being able to stay in the United States to do some kind of work with some Tennis academy and travel a litle bit and play in some Tennis tournaments."

VOA: standard.2009.12.14

and so I trust that it's easily intelligible as I read it to you now.] In fact, however, we have given up the claim to find, in the past, any truth valid and intelligible for ourselves.

所以我相信现在我读的时候大家一定会更容易理解],事实上，我们已经放弃了从过去中寻找,对于自己来说靠得住的，可以理解的事实。

耶鲁公开课 - 文学理论导论课程节选

You have to be careful that this first law of Newton is not valid for everybody.

大家需要注意的是,牛顿第一定律并非所有情况都适用

耶鲁公开课 - 基础物理课程节选