翻译这句"你的意思是让学校负责人写一个证明信吗?或者additional verification具体指什么"

you mean you need a verification provided by the school? or what did you really mean by "additional verification"?

Do you mean to let the persons responsible for schoole write a letter of reference?

自译

additional verification具体指附加证明,就是为了防止造假等写的证明信

Do you mean that a letter written by the person in charge of the school is required? In other words, what does "additional verification" concretely point to?

Do you mean that the letter of proof is to be written by the person in charge of the school?