N-COUNT
起决定性作用的事实(或论点)
A clincher is a fact or argument that finally proves something, settles a dispute, or helps someone achieve a victory.
例句
DNA fingerprinting has proved the clincher in this investigation...
在这次调查中,DNA指纹鉴定起了决定性的作用。
The clincher was City's second goal, scored minutes from the end.
离比赛结束还剩几分钟的时候，曼城队的第二粒进球锁定了胜局。