In Part III, the author analyze the possibility and necessity of university teacher roles under the modern education technology.
论文第三部分分析了现代教育技术条件下高校教师角色转换的可能性与必要性。
Secondly, a good teacher should play different roles in teaching.
其次，好老师应该能在教学中扮演不同的角色。
Fathers have indispensable roles to play in the lives of their children: provider, protector, nurturer, teacher, and friend.
父亲在孩子的生命中扮演着许多不可或缺的重要角色：供养人、保护者、养育者、导师和朋友。
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