プログレッシブ和英中辞典(第4版)の解説
ほんぶん【本分】
one's duty
本分を尽くす
do [discharge/fulfill] one's duty
本分を怠る
neglect one's duty
親としての本分は尽くしたつもりだ
I think I have done 「my duty [what is expected of me] as a parent.
学生の本分は勉強に専心することだ
It is a student's job to devote himself [herself] to study.
彼の行為は公務員の本分にもとる
His conduct is unworthy of a public servant.