smoking gun
US /ˈsmoʊkɪŋ ɡʌn/
UK /ˈsmoʊkɪŋ ɡʌn/
成语
确凿证据, 铁证
irrefutable evidence of a crime or wrongdoing
示例:
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The security footage was the smoking gun that proved his involvement in the robbery.
监控录像就是证明他参与抢劫的确凿证据。
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Investigators are still searching for the smoking gun in the corruption case.
调查人员仍在寻找腐败案件的确凿证据。