English as medium of instruction ; Engineering (technical language) ; Selbstkorrektur; Repair (in discourse) ; Self-repair (in discourse) ; Correction (in discourse) ; Gesichtsverlust; Mitigation (pragm.) ; Abschwächung (pragm.) ; Cross-cultural pragmatics; Pragmatics, cross-cultural; Pragmatik, interkulturelle; Intercultural communication ; Conflict research ; Misunderstanding ; Hochschule; University (communication situation) ; Vortrag; Recitation; Lecture ; English as international medium ; Second language acquisition (pragm.) ; Zweitspracherwerb (pragm.) ; Interactionist hypothesis (second language acquisition) ; Conversational analysis (second language acquisition) ; German ; English