There are also no promotions within the school, so that teachers remain in the classroom throughout their careers.学校里也没有晋升制度，所以老师在整个教学生涯中都要授课。Laski spent a goodly part of his lecturing life in American universities.拉斯基的教学生涯中很大一部分是在美国大学度过的。He began his teaching career at Fettes.他在费蒂斯中学开始了教学生涯。