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once; before; formerly; ever; former; ex-
never yet; never before; first time; still not happened
かつてここには大きな城があったらしい。
Apparently there was once a large castle here.
かつて経験したことのない事態に直面した。
I faced a situation I had never experienced before.
彼はかつてオリンピック選手だったそうだ。
I heard he was once an Olympic athlete.