the mediocre teacher tells, the good teacher explains, the superior teacher demonstrates, the great teacher inspires

US /ðə ˌmiː.diˈoʊ.kər ˈtiː.tʃər telz ðə ˌɡʊd ˈtiː.tʃər ɪkˈspleɪnz ðə səˈpɪr.i.ər ˈtiː.tʃər ˈdem.ən.streɪts ðə ˈɡreɪt ˈtiː.tʃər ɪnˈspaɪərz/
"the mediocre teacher tells, the good teacher explains, the superior teacher demonstrates, the great teacher inspires" picture
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平庸的老师讲述，好的老师解释，优秀的老师示范，伟大的老师启发