复数：M's
3.米metre(s)
4.百万million(s)
1.英语字母表第十三字母
2.M 形状的东西;【印】= em
3.M (罗马数字) 1000. MCML = 1950
1.the 13th letter of the English alphabet. M is a consonant.
2.the roman numeral for 1,000
3.motorway: used in the names of large highways in the U.K.
M——M——M——