4 篇文章
giant dinosaurs may have no longer roamed the forest,
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giant dinosaurs may have no longer roamed the forest, 巨大的恐龙也许不再主宰森林

whose ancestors once roamed on land.
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whose ancestors once roamed on land. 它的祖先曾遍布陆地

In summer, bison roamed freely,
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In summer, bison roamed freely, 夏季 美洲野牛四处漫步

three hundred thousand blue whales roamed the oceans
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three hundred thousand blue whales roamed the oceans 30万头蓝鲸让海洋看上去充满生气

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