Definition
To finalize or confirm the outcome of something, making it certain and unchangeable.
確定；使成定局
The signing of the contract set the seal on their long-term partnership.
簽署合約為他們的長期合作關係蓋棺定論。
After months of discussion, the committee's vote set the seal on the project's approval.
經過數月的討論，委員會的投票為該項目的批准蓋棺定論。
This victory set the seal on their chances of winning the championship.
這次勝利為他們贏得冠軍的機會蓋棺定論。