1Being enthusiastic about or absorbed in something; being engrossed or devoted to an activity.
彼はゲームに熱中して、宿題を忘れていた。
He was so absorbed in a game that he forgot his homework.
彼女は絵を描くことに熱中するあまり、日が暮れたことにも気づかなかった。
She was so engrossed in painting that she didn't even notice it had gotten dark.
彼女は研究に熱中して時間を忘れることが多い。
She often loses track of time because she's so absorbed in her research.
子供の頃、私は昆虫採集に熱中していた。
As a child, I was really into collecting insects.