Home/troffertroffer/trof-er, traw-fer/US // ˈtrɒf ər, ˈtrɔ fər //缓冲器,缓冲区,缓冲装置,缓冲垫Definitionsn.名词 noun1: a trough-shaped reflector holding one or more fluorescent lamps.Level 2Browse all words →