as dead as doornail

• adj. 死定了的(被彻底废弃的)

as dead as doornail的用法和样例：

例句

用作形容词 (adj.)

1. Marley was as dead as a doornail.
   老马利已经死定了。
2. The newly planted trees will be as dead as a dodo if frost hits them.
   新栽种的树如果被霜冻侵袭，那就死定了。