直到最近才发现的化石，显然是介于陆地哺乳动物和鲸类之间的过渡物种。
Missing until recently were fossils clearly intermediate, or transitional, between land mammals and cetaceans.
鉴于最近的墨西哥湾的燃油泄漏灾害，已经被冷嘲热讽了，想象一下脆弱的太阳系陆地世界被贪婪和利润蹂躏。
Given the current Gulf of Mexico oil-spill disaster it's easy to become cynical and imagine the fragile terrestrial worlds of the solar systems being ravaged for greed and profit.
他自信地游着，仿佛是打算往最近也在千里以外的陆地游去。
The lights of the Mariposa were growing dim in the distance, and there he was, swimming confidently, as though it were his intention to make for the nearest land a thousand miles or so away.
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