know the score
US /noʊ ðə skɔr/
UK /noʊ ðə skɔr/

1.
了解情況, 知道底細
to know the true facts of a situation, especially the unpleasant ones
:
•
She's been in this business for years, so she really knows the score.
她在這個行業多年,所以她真的了解情況。
•
You don't need to explain everything to him; he already knows the score.
你不需要向他解釋一切;他已經了解情況了。