Prego普雷戈PREabbr.Petroleum Refining Engineer炼油工程师pre-Gamesadj.奥运会前preelectionn.预选adj.选举前的Prezzavento普雷扎文托prenex form前束式premenstrua(单premenstruum)经前期preoccupiedadj.全神贯注的；出神的；抢先占有的动词preoccupy的过去式和过去分词.Prendivillen.普伦迪维尔pre-whirl预旋pre-sheaf预层prerefining预先精炼