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to get free (from); to be freed; to be released
鳥が籠から放れて空へ飛んでいった。
The bird got free from the cage and flew away.
捕らえられていた鳥がようやく籠から放れた。
The bird that had been captured finally got free from the cage.
繋いでいた犬が鎖から放れている。
The dog that was tied up is free from its chain.