指导教师

例句：

1. 1. The professor is an expert in the field of physics.
   这位教授是物理学领域的专家。
2. 2. She has been a great help to me as my personal tutor.
   她作为我的私人导师，一直对我帮助很大。
3. 3. He is an excellent instructor who has helped many students achieve their goals.
   他是一位优秀的导师，帮助了许多学生实现他们的目标。