old hand

• 1. 

  N-COUNT If someone is an old hand at something, they are very skilled at it because they have been doing it for a long time. 老手 [oft N 'at' n]

  例：

  An old hand at photography, Tim has been shooting wildlife as a hobby for the last 13 years.

  蒂姆是一位摄影老手，在过去13年里一直以拍摄野生动物为业余爱好。