Defense Secretary Robert Gates, in Afghanistan Wednesday, said it could begin sooner if conditions permit.

VOA: special.2010.03.13

So, we can think about what would happen if we're on his thesis defense, we're on his thesis committee, we would need to think of some pretty mean, hard, nasty questions that's what happens when you defend your thesis.

所以，我们可以设想一下,如果我们在他的论文答辩会上,担任论文委员会的成员，那么会发生些什么，我们会想一些非常严厉的,冷酷无情的，险恶的问题,那也是你们在论文答辩时,会遇到的情况。

麻省理工公开课 - 化学原理课程节选

This is this kind of cynical, if you want, defense of slavery.

对于奴隶制,如果你想这么理解的话,这便是一种愤世嫉俗的辩护

耶鲁公开课 - 美国内战与重建课程节选

If attacked, the wagons could quickly form a circle for defense.

VOA: special.2009.03.30

There are defense mechanisms, there are biological instincts, neurosis-- and if you understand these very often dark forces, were better able to deal with life: understand as well as improve the quality of life.

还有防卫机制，人类本能论，神经症-,如果你理解这些黑暗势力，就能更好地处理生活：,了解并改善生活质量。

哈佛公开课 - 幸福课课程节选

President Obama had threatened to veto his own defense budget if the Congress added $1.75 billion to produce more F-22 Raptor aircraft.

VOA: standard.2009.07.21

So you think that this is a defense, this defense of private property in land... Yes, because it complicates original acquisition If you only cite the arrival of foreigners that cultivated the land.

所以你认为他是在，为土地的私人所有作辩护吗。,是的，因为这复杂化了“最初占有“原则,如果只引用外国人到来并耕种土地这一例子的话。

耶鲁公开课 - 公正课程节选

Japanese Defense Minister Yasukazu Hamada says he has ordered the interception of any dangerous debris, if anything goes wrong with North Korea's planned rocket launch.

VOA: standard.2009.03.27

Kasab was the only one captured alive. The defense had said that, if the plea was accepted, the trial should end and a sentence delivered.

VOA: standard.2009.07.23

So the United States does not even know if the system works,". The missile defense system was discussed during the recent Obama-Medvedev summit in Moscow.

VOA: standard.2009.07.15

"The Russians would have been much smarter if they did not continuously, publicly link missile defense with arms control, because they might have gotten the result they wanted anyway.

VOA: standard.2009.07.15