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to be closed; to be blocked; to be healed (e.g. wound); to be shut up
to be clogged; to be plugged up
to be occupied; to be taken (e.g. accommodation)
道が工事でふさがっていて通れない。
The road is blocked by construction and impassable.
全席ふさがっているので立って待った。
All seats were taken, so I stood and waited.
傷口がふさがるまで安静にしてください。
Please rest until the wound closes.