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to remain; to abide; to stay (in the one place)
to be limited to; to be confined to; to only account for
「留まる」 has another reading with different meanings.
彼女の目に涙が留まっているように見えた。
Tears seemed to stay in her eyes.
記憶に留まる思い出を大切にしていきたい。
I want to cherish memories that stay in my mind.
その光景は心に深く留まって忘れられない。
That scene stays deep in my heart and I can't forget it.