locum

noun

1. 代班医生；代理牧师
   a doctor or priest who does the work of another doctor or priest while they are sick, on holiday, etc.

1. （生病或休假的医生或牧师的）临时代理
   A locum is a doctor or priest who does the work for another doctor or priest who is ill or on holiday.

1. Your doctor is on holiday& would you like to see her locum?
   你的医生去度假了，让替代她的大夫给你看病行吗？

noun

1. someone (physician or clergyman) who substitutes temporarily for another member of the same profession

   Synonym:    locum tenens