用as dead as dodo表达“彻底过时，不再重要”

在英语中，常用“as dead as dodo”表达某个东西已经不再重要了，彻底过时了。一般来说，主要用于形容过时的思想或潮流。

• In the past people used to watch and record videos on VHS, but now that format is as dead as a dodo.
• The perception that smoking is good for your health is now as dead as a dodo.

值得注意的是，还有一个与dead相关的短语“dead duck”，指的是“一件事情不怎么成功”。

• Frank‘s coffee shop business was a dead duck sadly. His coffee was just awful, and the shop was in a bad location.