mobile vulgusyoudaoicibaDictYouDict[mobile vulgus 词源字典]
"= mobile", Late 16th cent.; earliest use found in William Watson (?1559–1603), Roman Catholic priest and conspirator. From classical Latin mōbile vulgus the changeable common people, the fickle crowd from mōbile, neuter of mōbilis + vulgus.[mobile vulgus etymology, mobile vulgus origin, 英语词源]