preparation读音_例句
preparation 朗读
preparation
音标：prepə'reɪʃən
preparation翻译
preparation双语用法和例句
相关单词
polemology prex pfennig pople pogo photosphere plunderous powderless photolysis preheating preterist pardoner potbellied pungi panoplied pansophism parashah peripateticism peritus palestinian