一些科学家推测，火星在早期很长时间里可能都有以河流、湖泊，甚至海洋装点着它的表面。
Some scientists speculate that Mars may have enjoyed an extended early period during which rivers, lakes, and perhaps even oceans adorned its surface.
早期研究证明"红色河流“的颜色是由于氧化铁导致，但是铁如何到了冰川表面这仍然是个迷。
Earlier research indicates the color of Blood Falls is due to oxidized iron, but how the iron got to the surface of the glacier remained a mystery.
在20世纪早期为建设洛杉矶，欧文斯河被引水到洛杉矶，使得加利福尼亚的许多河流被破坏消失。
Lakes in California were damaged and destroyed when the Owens River was diverted in the early 20th century to build Los Angeles.
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