take the lid off
US /teɪk ðə lɪd ɔf/
UK /teɪk ðə lɪd ɔf/

1.
揭露, 揭开盖子
to reveal something secret or scandalous
:
•
The journalist threatened to take the lid off the corruption scandal.
记者威胁要揭露腐败丑闻。
•
It's time to take the lid off what's really happening behind the scenes.
是时候揭露幕后真相了。