刘教授用英语简写怎么说

If you are asking how to refer to Professor Liu in Engpsh using an abbreviation, you can simply say "Prof. Liu" or "Professor Liu". "Prof." is a common abbreviation for "Professor" and is used as a title before someone's name. "Prof." can be used with both first and last names, as in "Prof. John Smith" or just with the last name, as in "Prof. Smith".

It is also common to use "Dr." as an abbreviation for "Doctor" as a title before someone's name, particularly if the person has a doctoral degree. However, it is important to note that "Dr." is not typically used to refer to someone who holds a professorship, and "Professor" is the more appropriate title in this case.

So, to refer to Professor Liu in Engpsh using an abbreviation, you can say "Prof. Liu" or "Professor Liu".