音标发音英式音标 [aɪ]美式音标 [aɪ]英式发音 美式发音 基本解释字母, (英语字母表的第九个字母), 数字, (罗马数字)1。同根派生 I, i相关词英英字典剑桥英英字典(LETTER) the ninth letter of the English alphabet(NUMBER) the sign used in the Roman system for the number 1 and as part of the numbers 2 (ii), 3 (iii), 4 (iv), 6 (vi), 7 (vii), 8 (viii), and 9 (ix)I, i剑桥字典I, i柯林斯字典