set the record straight
US /sɛt ðə ˈrɛkərd streɪt/
UK /sɛt ðə ˈrɛkərd streɪt/

1.
澄清, 纠正误解
to correct a misunderstanding or a false impression
:
•
I need to set the record straight about what happened at the meeting.
我需要澄清会议上发生的事情。
•
Let me set the record straight: I never said that.
让我澄清一下:我从没说过那样的话。