他从一名兼职助教转变成了一名社会史讲师。
He moved from being a part-time tutor to being a lecturer in social history.
07——2000.07 西安统计学院助教、讲师、副教授；
07——2000.07: Teaching Assistant, lecturer, associate professor of Xi'an Statistics Institute;
他们的专业技术职称有教授、副教授、讲师和助教。
Their academic titles vary-from professor, associate professor, lecturer to assistant.
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