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to step over; to step across; to stride over; to stride across; to cross
to stretch over; to span; to bridge; to saddle; to straddle
水たまりをまたいで向こう側へ渡った。
I stepped over the puddle to cross to the other side.
フェンスをまたいで庭に入ってしまった。
I stepped over the fence and ended up in the garden.
敷居をまたぐ時は足元に気をつけてね。
Be careful of your step when crossing the threshold.