To eliminate selfish thoughts and wholeheartedly devote oneself to the public good; to be selfless and dedicated to public service.
这位老教师一生都在教书育人，真正做到了灭私奉公，把所有精力都投入到了学生们的成长上。
This veteran teacher dedicated their entire life to educating and nurturing, truly embodying selfless devotion to the public good, pouring all their energy into the growth of their students.
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