strong suit

US /ˈstrɔŋ suːt/
UK /ˈstrɔŋ suːt/
"strong suit" picture
1.

keahlian, kekuatan

a particular aptitude or talent; a strength

:
Public speaking is not my strong suit.
Berbicara di depan umum bukanlah keahlian saya.
Math has always been his strong suit.
Matematika selalu menjadi keahliannya.