become [be] enthusiastic ((about));〔専念する〕get [be] engrossed [absorbed] ((in)) ⇒ねつ(熱)II
- 研究に熱中している
- He is 「enthusiastic about [absorbed in] his research.
- このごろは切手集めに熱中しなくなった
- He has recently lost his enthusiasm for collecting stamps.
- ロックに熱中している
- 《口》 He's 「really into [mad about] rock.
- かけ事に熱中して家庭を顧みなかった
- He was too intent on gambling to think of his family.
- 革命思想に熱中したころもあった
- At one time I was 「lost in [obsessed with] revolutionary ideas.
- あまり熱中しないうちにやめておきなさい
- You'd better give it up before you get addicted to it.