audio-lingualyoudaoicibaDictYouDict[audio-lingual 词源字典]
"Of a theory or approach in the teaching of foreign languages: based on a system of drills in which the student repeats or adapts model sentences delivered orally or played aloud by the teacher", 1950s; earliest use found in Naugatuck (Connecticut) Daily News. From audio- + -lingual.[audio-lingual etymology, audio-lingual origin, 英语词源]