✔ 最佳答案
Not intended to offend the above two posters,
but the second poster was wrong...
The first answer is a little better,
but his/her answer is in a wrong order.
見習主任 should be translated as Supervisor Trainee,
or Supervisor Intern.
Read the recruitment advertisment in English Newspapers
and you'll know what I mean.
參考: I am a translator.