old hand
US /oʊld hænd/
UK /oʊld hænd/

1.
orang lama, veteran, ahli
a person with a lot of experience in a particular area or activity
:
•
He's an old hand at negotiating contracts, so we trust his judgment.
Dia orang lama dalam negosiasi kontrak, jadi kami percaya penilaiannya.
•
She's an old hand at gardening and can tell you exactly what to do.
Dia orang lama dalam berkebun dan bisa memberitahumu persis apa yang harus dilakukan.