The flightless dodo was first discovered on the Indian Ocean island of Mauritius in the late 16th Century. Within a few decades they were extinct. Before the arrival of man, the dodo is thought to have evolved to such a large size because it had no natural predators and plentiful food.
如果说一个东西 as dead as dodo, 意思就是这个东西已经不再重要了，过时了。我们通常使用这个短语来谈论思想或潮流。
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.
我们用 dead duck 来形容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.