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

That they exist is a proof that American ideals are not the tawdry pretenses they are so often accused of being.

或许这类人的存在,正证明了美国式理想并非无可挑剔,或者说它也在经受着现实的折磨，“

耶鲁公开课 - 1945年后的美国小说课程节选

because there actually is no proof of any social deviance or destruction of people with it.

因为没有证据真正表明同性恋者有任何社会异常行为和破坏力。

给我结婚的自由 - SpeakingMax英语口语达人

And today's transition is further proof that those who have tried to pull Iraq into the abyss of disunion and civil war are on the wrong side of history,"

VOA: standard.2009.06.30

So again, this is how we kind of feel the article proof.

我们又一次,证明了大脑的关键性。

耶鲁公开课 - 死亡课程节选

"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

And he knows no landfill liner system is completely leak-proof, meaning there is some possibility that the industrial quantities of waste coming from the oil cleanup could pollute local underground water supplies.

VOA: standard.2010.08.05

Wouldn't that be sure and swift justice since the plea of guilty is the strongest form of proof known to the law?" Some legal experts continue to raise questions about the validity of the military commissions, even though the Obama administration and Congress have taken steps to give defendants more rights in that process.

VOA: standard.2009.11.25