"I think the earlier ones are a lot better." —"Mm, definitely."“我觉得早前的那些要好得多。”——“嗯，毫无疑问。”The car is some 40mm shorter than its predecessor.这辆轿车比原先的车型短了约40毫米。...a length of 22-mm diameter steel pipe.一段直径为 22 毫米的钢管Nuts ell...

mm的音标：...

Riyadh got 25 mm of rain in just 12 hours.利雅得在12小时内降水就达25毫米。"I think the earlier ones are a lot better." —"Mm, definitely."“我觉得早前的那些要好得多。”——“嗯，毫无疑问。”"Mm," she answered drowsily.“嗯，”她困恹恹地回答道。...

abbr.=megameter，=millimeter，=millimicron...