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21世纪神医沈瑜一朝穿越，竟然成了远古蛮荒时代地位最卑微的一名奴隶，而成为奴隶还不是最可怕的，最可怕的是她才穿越第一天就被野兽扑倒，差点命丧兽口，而就在她命悬一线的时候，一个男人的出现，改变了她的一生。。Legendary oceanographer Sylvia Earle and a cast of pioneering marine scientists tell the story of the incredible work being undertaken across the planet to protect the fragile ecosystem of our oceans. Perpetual Planet: Heroes of the Oceans is a showcase of the wonder of the sea, of the living laboratory we all live in and of the vital science being carried out beneath the waves...。