两个字母后面都要加点P.E. n. 体育课; [例句]Study on laws and methods of designing and compiling gymnastics teaching materials for departments and institutes of P.E.试论体育院系体操教材设计与编写的原则和方法。

两个字母后面都要加点P.E. n. 体育课; [例句]Study on laws and methods of designing and compiling gymnastics teaching materials for departments and institutes of P.E.试论体育院系体操教材设计与编写的原则和方法。