old hand

BrE

/ˌəʊld ˈhænd/

NAmE

/ˌoʊld ˈhænd/

noun

~ (at sth/at doing sth)

a person with a lot of experience and skill in a particular activity 老手；经验丰富的人；在行的人

◆She's an old hand at dealing with the press. 她是与新闻界打交道的老手。