Aneet头孢唑啉钠, 先锋Ⅴ, 头孢菌素Ⅴ, 先锋唑啉钠, 西孢唑啉钠, 先锋啉, 凯复卓, 先锋霉素Ⅴ[头孢菌素类抗生素]anart.（用在元音音素前）一an up-to-date factory一座现代化的工厂an intercommunication ous双性化an analysis of categories类别分析an ill - shapen vase.一个形状难看的花瓶an English teaching model英语教学模式an indissoluble agreement长久有效的协定an unexpected development出乎意料的新事件an unqualified instructor不合格的教师an empty region of mining采空区an examination in Physics物理考试