death knell
成語所屬單字death
death knell — 慣用語
1. an event or sign that marks the end or failure of something
1.慣用語
釋義
喪鐘；末日徵兆
an event or sign that marks the end or failure of something
例句
The invention of the smartphone sounded the death knell for the simple flip phone that could only make calls and send texts.
The leak of the company's financial problems rang the death knell for any hope of getting a bank loan.