剑桥词典 X, x noun [C or U] (LETTER) the 24th letter of the English alphabet （英语字母表的第24个字母） X, x noun [C or U] (NUMBER) the sign used in the Roman system for the number 10 （罗马数字）10 X, x noun [C or U] (VOTE) used when voting to mark the name of the person that you are choosing （选举中用于标记自己选择的候选人姓名） 返回 X, x