I, i
noun [ C or U ] uk/aɪ/ us/aɪ/ Is, I's or i's
(LETTER)
(英语字母表的第九个字母)
the ninth letter of the English alphabet
(NUMBER)
(also i)(罗马数字)1
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)