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n (pl I's, i's / aIz; aIz/) 1 the ninth letter of the English alphabet 英语字母表的第九个字母: `Idiot' begins with an I/`I'. ｀idiot＇一字以i字母开始. 2 (idm 习语) dot one's/the i's and cross one's/the t's => dot v.



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