take it with a grain of salt
对某事持怀疑态度，不完全相信之意
口语·表达怀疑
英文释义
to not completely believe or trust something; to be skeptical or cautious about the information given
例句
He says he can run a mile in four minutes, but take it with a grain of salt—he's known to exaggerate.
典故来源
源自古罗马作家普林尼的解毒剂配方，加入一粒盐可减轻毒性，比喻对信息持保留态度。