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frankfurter (n.)[frankfurter 词源字典]: "hot dog," 1894, American English, from German Frankfurter (wurst) "(sausage) of Frankfurt," so called because the U.S. product resembled a type of smoked-beef-and-pork sausage originally made in Germany, where it was associated with the city of Frankfurt am Main (literally "ford of the Franks" on the River Main). Attested from 1877 as Frankfort sausage.[frankfurter etymology, frankfurter origin, 英语词源]