プログレッシブ和英中辞典(第4版)の解説
はげむ【励む】
〔いそしむ〕work hard; apply oneself to ((a task));〔懸命に努める〕strive ((to do; for))
学業に励む
apply oneself to one's studies/work hard at one's lessons
仕事に励むあまり家庭を顧みなかった
He paid little attention to his family because he was 「preoccupied with [too devoted to] his work.