I, i

剑桥词典

I, i noun [C or U] (LETTER)


the ninth letter of the English alphabet
（英语字母表的第九个字母）

I, i noun [C or U] (NUMBER)

(also i)
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)
（罗马数字）1 返回 I, i