South Africa ; Hong Kong ; Lehrerausbildung; Teacher training; Lehrerfortbildung; In-service teacher training; Teacher education ; Academic language; Scientific language ; Hochschule; University (communication situation) ; Sprachenpolitik; Language management; Language politics ; Zweisprachigkeit; Bilingualism ; Collaborative text production; Coauthorship; Text production (cooperative) ; Textverständnis; Text comprehension; Discourse comprehension; Text reception ; English