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to succeed; to relieve; to replace
to take the place of; to substitute for; to take over for; to represent; to hand over (telephone)
to be exchanged; to change (places with); to switch
古い看板が新しいものに替った。
The old sign was replaced with a new one.
父に替って母が挨拶をした。
My mother greeted everyone in place of my father.
古い機械が新しいものに替った。
The old machine was replaced with a new one.