他是一位有奉献精神的老师.

He is a dedicated teacher.

教书是个很艰难的工作，并且它只让有耐心以及有奉献精神的人成功。

Teaching is a tough job and it takes patient and dedicated people to be successful with it.

现在的教育提倡的是，一个有奉献精神的老师能发现一个天才学生。

What you have there is a person of extraordinary dedication who found a talent.

她在年轻时所处的环境及其对所处环境的反应有助于使她成为一个聪明、充满热情和有奉献精神的科学家，正是她，永远地改变了物理学的面貌。

The circumstances of her youth, and her reactions to them, helped to form the bright, passionate, and dedicated scientist who changed the face of physics forever more.