no earthly reason

• 毫无理由

no earthly reason的用法和样例：

例句

1. It's playing the goat for no earthly reason.
   这简直是毫无理由的瞎胡闹。
2. The boss gave John a week's warning without reason.
   老板毫无理由地通知约翰一个星期后离职。