N-VAR
学徒身份；学徒期
Someone who has an apprenticeship works for a fixed period of time for a person who has a particular skill in order to learn the skill. Apprenticeship is the system of learning a skill like this.
例句
After serving his apprenticeship as a toolmaker, he became a manager.
结束了工具匠的学徒期以后，他当上了经理。
...a period of apprenticeship.
学徒期