smoking gun

音标发音

But their postings went up after thestockmarket had closed—hardly a smoking gun.
他们张贴上后，股市已经关闭，几乎没有确凿的证据。
Dr. Joyce, however, said that the experimenters had yet to provide a “smoking gun” that there was arsenic in the backbone of working DNA.
但是，乔伊斯博士说，实验还需要找到确凿的证据来证明在DNA骨架中存在砷。
It isnot clear that the Americans have a smoking gun linking the ISI to the orderingof strikes in Afghanistan. More to the point, America's abilities to influencePakistan's army are limited.
他称美国确实没有确凿的证据证明阿富汗的恐怖袭击与巴基斯坦三军情报局相关，但这主要是因为美国对巴军的影响力有限。

"There was no single piece of intelligence, a 'smoking gun' if you will, that said that Mr.Abdulmutallab was going to carry out his attack against that aircraft,"
And here is the smoking gun sentence right here.
这是确凿的证据。
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According to the Smoking Gun, Andrews was just one of 16 female reporters he targeted.
FORBES: The Erin Andrews peephole pervert gets 30 months, while millions of video-watching perverts go unpunished
John Brennan said Sunday a couple of times that there was no smoking gun.
WHITEHOUSE: Press Briefing

A smoking gun is a piece of evidence that proves that something is true or that someone is responsible for a crime.