ADJ
(用于no earthly reason等短语中表示强调)根本,绝对
Earthly is used for emphasis in phrases such as no earthly reason. If you say that there is no earthly reason why something should happen, you are emphasizing that there is no reason at all why it should happen.
例句
There is no earthly reason why they should ever change...
他们完全没有必要作出改变。
What earthly reason would they have for lying?...
他们到底为什么要撒谎呢?