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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
「止まる」 has another reading with different meanings.
被害は最小限にとどまった。
The damage remained at a minimum.
ここにとどまるべきか迷っている。
I'm wondering whether I should stay here.
彼の影響は一つの分野にとどまらなかった。
His influence didn't remain in just one field.