proof positive
成語所屬單字proof
proof positive — 慣用語
1. clear, absolute, and undeniable evidence that settles a question beyond any doub
1.慣用語
釋義
確鑿的證據；鐵證
clear, absolute, and undeniable evidence that settles a question beyond any doubt.
例句
The CCTV footage was proof positive that the suspect had been near the building at midnight.
Her first-place finish in the race was proof positive that months of hard training had paid off.