音标发音英式音标 [ˌtwelvˈeɪ]美式音标 [ˌtwelvˈeɪ]英式发音 美式发音 基本解释（依照英国法律）12 岁以下儿童不得独自观看的电影之标志。同根派生 12A相关词英英字典剑桥英英字典 in the UK, a symbol that marks a film that cannot be legally watched alone by children who are under twelve years old12A剑桥字典12A柯林斯字典