人家是Dozent是肯定了,看wiki上dozent啥都可能,中文尊称教授也未尝不可。德语节目中称他professor,估计他也就笑纳了。
In Germany, Austria and in the German-speaking part of Switzerland, Dozent or Hochschuldozent denotes an academic appointment at a university or similar institution, at a mid level ranking of seniority. The title of Privatdozent is used (with certain conditions) by those who have successfully completed a Habilitation, thereby denoting that its holder has the right to independently teach without being supervised by a professor. In this way, a Privatdozent may for instance hold an appointment as Hochschuldozent or Wissenschaftlicher Mitarbeiter, or even Professor.