seal someone's fate
US /siːl ˈsʌm.wʌnz feɪt/
UK /siːl ˈsʌm.wʌnz feɪt/

1.
决定某人的命运, 注定某人失败
to make it certain that someone will fail or experience something unpleasant
:
•
His poor performance in the final exam sealed his fate for the scholarship.
他在期末考试中的糟糕表现决定了他能否获得奖学金。
•
The discovery of new evidence sealed the suspect's fate.
新证据的发现决定了嫌疑人的命运。