大家帮忙看一下学校要求

学校说：“International applicants must submit two copies of official transcripts in their original language with English translations prepared by the issuing institution. Notarized documents are not acceptable. Official transcripts (with English translations) must be sent directly to the Department of Electrical Engineering from the issuing institution or you can mail the transcripts yourself provided they are sealed within the original envelope of the issuing institution.”

请问大家这是什么意思，我一开始理解的是：除了寄一份官方的成绩单，还要寄两份复印件过去吗？Notarized documents指的是什么？公证处公证的吗？
另外，two copies of official transcripts指的是两份官方成绩单的复印件，还是两份官方成绩单啊？这个copies指的是复印件，还是 份

学校开的official成绩单寄过去就是了
two copies of official transcripts 是指两套official成绩单，不是复印件吧

好的，多谢大家！又犯傻了～

楼主你这阅读理解真成问题啊