make a mountain out of a molehill
⇒ 他不过是迟到了几次,老板就把他开除了,真是小题大做。
He was late no more than a few times, and the boss sacked him — that was making amountain out of a molehill.
英语词典包含298861条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。