熱中している

be absorbed in

→ 熱中
phrase Rare #22,413
be absorbed in Describes being deeply absorbed in or enthusiastic about an activity, hobby, or subject. The ている form emphasizes the ongoing state.
JA: 彼はゲームに熱中している。
EN: He is absorbed in a game.
phrase Rare #29,528
be absorbed in Describes being deeply absorbed in or focused on an activity, subject, or pursuit.
JA: 彼女は絵を描くことに熱中している。
EN: She is absorbed in her studies.

母はテニス熱中している

My mother is really into tennis right now.

彼は仕事に熱中している

He is absorbed in his work.

彼は完全に自分の商売に熱中している

He is completely absorbed in his business.

彼は研究に熱中している

He is engrossed in his research.

彼は仕事にたいへん熱中している

He is very absorbed in his work.