PHRASAL VERB 对…一笑置之;笑言以对 If you laugh off a difficult or serious situation, you try to suggest that it is amusing and unimportant, for example by making a joke about it. 对…一笑置之;笑言以对
The couple laughed off rumours that their marriage was in trouble. [VERBPREP. noun]
夫妻两人对他们婚姻出现问题的谣言一笑置之。
Whilst I used to laugh it off, I'm now getting irritated by it. [VERB noun PREP.]