to gaze (at); to stare intently (at); to look fixedly (at); to fix one's eyes (on)
to fascinate; to enchant; to possess; to bewitch; to enthrall
絵画に見入ってしまった。
I ended up gazing intently at the painting.
彼女の顔に見入っていた。
He was staring intently at her face.
夕焼けに見入るまま時間が過ぎた。
Time passed as I stared at the sunset.