another/the final nail in the coffin怎么读，是什么意思，单词翻译、读音

Each successive revelation of incompetence is another nail in the chairman's coffin. 接二连三地显露出不称职是导致董事长下台的一道道催命符。

That report drove the final nail in the company's coffin. 那份报告为公司敲响了丧钟。