音標發(fā)音英式音標 [?e??f??r]美式音標 [?e??f??r]英式發(fā)音 美式發(fā)音 基本解釋(英國標準的)A4紙(21 x 29.7厘米)。同根派生 A4相關詞英漢例句noun [ U ]a sheet of A4 一張A4紙A4 paper A4紙A4更多例句英英字典劍橋英英字典 in the UK, paper that is a standard size of 21 centimetres by 29.7 centimetresA4劍橋字典A4柯林斯字典