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《伟大的抗美援朝》系列共分五集，通过详实的历史文献、珍贵的历史画面，还原抗美援朝历史的真实场景，讲述战争中发生的英雄故事。。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...。