a master in pig-feeding的用法和样例：
- A master in SOUTH CHINA AGRICULTURE UNIVERSITY.
- He have a master's degree in business science.
- I am working on a master's degree in civil architecture.
- It is a good vaccine, particularly in pigs fed on swill.
- Hieronymus Bosch was a master of the grotesque in painting.
- He is a versatile person and can be trusted as a master in many fields.