bbc每日地道英语短语：由bbc英语编写,讲解口语中最常用的英语成语短语。
今日短语
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。
例句
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.
请注意
我们用 dead duck 来形容一件事情不怎么成功。
今日小常识
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.
没有飞行能力的渡渡鸟16世纪末在印度洋岛国毛里求斯被发现。不过，在被发现短短几十年后，这种鸟就彻底灭绝了。据说在人类到达这个岛国之前，渡渡鸟体形庞大，因为岛上有大量丰富的食物供它们享用，而且没有天敌与它们搏斗。