men·tor /ˈmɛnˌtɔr, tɚ/
良師益友,私人教師
Men·tor n. A wise and faithful counselor or monitor.
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mentor
n : a wise and trusted guide and advisor [syn: wise man]
v : serve as a teacher or trusted counselor; "The famous
professor mentored him during his years in graduate
school"; "She is a fine lecturer but she doesn't like
mentoring"