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to suspend between two points; to build (a bridge, etc.); to put up on something (e.g. legs up on table)
川に丸太で橋を架けた。
I built a bridge over the river with logs.
二つの島に橋を架ける計画がある。
There's a plan to build a bridge between the two islands.
村の人たちが力を合わせて古い橋を架け直しました。
The villagers worked together to rebuild the old bridge.