know your onions
US /noʊ jʊər ˈʌnjənz/
UK /noʊ jʊər ˈʌnjənz/
1.
tahu selok-belok, sangat berpengetahuan
to be very knowledgeable about a particular subject or field
:
•
You can trust her advice; she really knows her onions when it comes to finance.
Anda boleh percayakan nasihatnya; dia benar-benar tahu selok-belok kewangan.
•
The mechanic quickly identified the problem, proving he really knew his onions.
Mekanik itu cepat mengenal pasti masalah, membuktikan dia benar-benar tahu selok-belok.