know what's what

US /noʊ wʌts wʌt/
UK /noʊ wʌts wʌt/
"know what's what" picture
1.

tahu apa yang sebenarnya, faham situasi

to have a good understanding of a situation or of how things work

:
She's been in this business for years, so she really knows what's what.
Dia sudah bertahun-tahun dalam perniagaan ini, jadi dia benar-benar tahu apa yang sebenarnya.
You need to spend some time learning the ropes if you want to know what's what around here.
Anda perlu meluangkan masa untuk belajar selok-belok jika anda ingin tahu apa yang sebenarnya di sini.