beep (interj.)youdaoicibaDictYouDict[beep 词源字典]
1927, imitative of automobile horns (originally of the sound of a certain type of automobile horn among several types in use in the years after the klaxon horn was brought into use c. 1910). Used as a noun and verb by 1929. Related: Beeped; beeping.[beep etymology, beep origin, 英语词源]