音标发音英式音标 [ˌeɪˈθriː]美式音标 [ˌeɪˈθriː]英式发音 美式发音 基本解释(英国标准的)A3纸(29.7 x 42厘米)。同根派生 A3相关词英汉例句noun [ U ]a sheet of A3 一张A3纸A3 paper A3纸A3更多例句英英字典剑桥英英字典 in the UK, paper that is a standard size of 29.7 centimetres by 42 centimetresA3剑桥字典A3柯林斯字典