doornail
n. 门钉,大头钉子
例句
This cute little door-mouse is as dead as a doornail.
这个可爱的小老鼠像门钉一样牢固。
It lie there with its eyes closed, dead as a doornail.
它躺在那里眼睛闭着,确实死了。
All the television pundits said I was dead as a doornail.
所有的电视评论员都说我“必死无疑”。