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to look out over; to look onto
展望台から海が見渡せた。
From the observation deck, we could see the ocean.
その丘からは町全体が見渡せている。
From that hill, you can see the entire town.
高台に立てば遠く山並みまで見渡せる。
From the high ground, you can see as far as the distant mountain range.