一篇有关世界十大自然奇观的英文介绍
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一篇有关世界十大自然奇观的英文介绍
答
Serengeti MigrationOver a million animals annually trek the circular Serengeti Migration route in search of water and pasturage.Safari-goers see wild lions,giraffes,zebras,wildebeests,elephants,and mo...