1 N-VAR 英语字母表的第13个字母 M is the thirteenth letter of the English alphabet. 英语字母表的第13个字母
2 m is a written abbreviation for(书面缩略 =) metres or metre .
3 m is a written abbreviation for(书面缩略 =) the number million .
4 (用于首字母为m的一些单词的书面缩写,如 minutes,married,male 和 masculine) M or m is a written abbreviation for words beginning with m, such as 'minutes', 'married', 'male', and 'masculine'. (用于首字母为m的一些单词的书面缩写,如 minutes,married,male 和 masculine)
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