The incumbent has 54 percent of valid votes above the absolute majority needed to avoid a second round of balloting.

VOA: standard.2009.09.08

It's not a valid experiment if it has no chance of showing that my hypothesis is flawed.

如果根本没可能证明我的假设,是有瑕疵的，那么这个试验。

麻省理工公开课 - 计算机科学及编程导论课程节选

And yet get a valid test. Sometimes it can be timing. If you're running multiple processes.

有些时候当你运行多线程时,是因为时间的原因。

麻省理工公开课 - 计算机科学及编程导论课程节选

Plant says this definition, which first appeared in a 1930 ILO Convention Against Forced Labor, is still valid today.

VOA: standard.2009.08.21

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

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

VOA: standard.2009.05.21

U.N.spokesman Gordon Weiss says that cannot be used as a valid excuse.

VOA: standard.2009.04.26

"Therefore you need a new start, where the same ideas that are valid become part of the American foreign policy but somehow delinked (from) that whole invasion and occupation, so the new administration has the opportunity to do that in a way that democracy is incorporated into U.S.Middle East policy."

VOA: standard.2010.05.19

"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