This evidence can be used by investigators who are working to solve the crime and as proof in a court of law.

VOA: special.2010.05.05

Of course, that's not the useful application for it, it's more of a proof of principle, but it does show you that you can put it in for studies in any organisms.

当然，这不是很有用的应用，这仅仅是一个原理上的证明，但它告诉你你可以把它,放到研究任何生物体中。

麻省理工公开课 - 化学原理课程节选

Because the Mycenaean centers all reveal for that stretch of time that they're scared. The proof of it comes from strengthening their already quite strong walls in almost all the sites that we see, and also--this is a very important fact.

因为在迈锡尼文明的中心,有迹象表明在一段时期,他们受到了威胁,这样说的证据是,我们发现的几乎所有的遗迹,都在本就很坚固的城墙上继续加固,而且,这是一个很重要的史实

耶鲁公开课 - 古希腊历史简介课程节选

Democrats said the policy was proof that anti-slavery extremists were in control of the government.

VOA: special.2009.10.08

Professor Yoshino explains. "Shakespeare calls this a problem of ocular proof, the idea that we need to see evidence before we believe in it -- and that,oftentimes, when metaphysical questions of guilt or innocence are difficult for us to answer, we have a tendency to reduce them to questions that pertain to physical evidence.

VOA: special.2011.06.06

He says Poland is now ready to be a responsible co-leader in Europe, and this signature is proof of that.

VOA: standard.2009.10.10

"Everywhere in Latin America, enemies of America are going to use the picture of Chavez smiling and meetingwith the president as proof that Chavez is now legitimate, that he is acceptable,".

VOA: standard.2009.04.20

Only hours after Mr.Karzai's victory in the tainted election, President Obama welcomed the Afghan leader's pledge to eradicate corruption, but frankly warned the proof of those efforts will be not in words,but in deeds.

VOA: standard.2009.11.17

"I think that by having people adopt a healthy lifestyle, both from a medical standpoint as well as nutritional and cognitive stimulation standpoint, that we can reduce the incidence of cognitive decline, which will be proof that these factors are, in fact,important."

VOA: standard.2010.06.17