smoking gun片語

鐵證、確鑿的證據、鐵證如山

Investigators finally found the smoking gun in his emails.

調查人員終於在他的電子郵件裡找到了鐵證。

鐵證、關鍵證據多用於否定句

There is no smoking gun linking the company to the leak.

目前沒有鐵證能把這家公司和洩密事件連在一起。

決定性的、確鑿的

The recording was the smoking-gun evidence the prosecution needed.

那段錄音正是檢方需要的決定性證據。