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once; before; formerly; ever; former; ex-
never yet; never before; first time; still not happened
曽てこの地は海だったという伝説があります。
It's said this land was once sea.
曽て見たことのない不思議な光景でした。
It's a scene I've never seen before.
曽ての仲間たちと久しぶりに再会しました。
I reunited with my former colleagues.