take with a grain of salt
以保持怀疑的态度对待，表示不完全相信或接受
口语·表达怀疑或不完全相信
英文释义
to not completely believe or trust something; to be skeptical or doubtful about something
例句
I take his promises with a grain of salt; he always exaggerates.
典故来源
源自拉丁语，指用一粒盐使毒药变得无害，后引申为对事物持怀疑态度。