micro百万分之一;微;放大; microsecond; microfilm microphone, mid-f midday; midnight mid-autumn mid -term mis-误 mislead: misunderstandmicro-百万分之一；微；放大； microsecond; microfilm; microphone; mid- 中 midday; midnight; mid-autumn; mid-term; mis- 误 mislead; misunderstand;