old hand
US /oʊld hænd/
UK /oʊld hænd/
1.
老手, 经验丰富的人
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.
他是谈判合同的老手，所以我们相信他的判断。
•
She's an old hand at gardening and can tell you exactly what to do.
她是园艺老手，能准确告诉你该怎么做。