Liquid water 'lake' revealed on Mars 科学家在火星上发现液态水体 Play audio file 研究人员们发现了火星上存在液态水体的证据。这片被科学家认作是湖的水体位于该行星南极的冰盖底部,横跨约二十公里(十二英里)。 文字稿 Since Nasa's Viking Mission tested Martian soil samples back in the 1970s, we've known the surface of Mars to be a desert – inhospitable to life as we know it. 自美国航空航天局(Nasa)在1970年代检测了由维京号计划从火星带回的土壤以来,火星表面一片荒芜且不适于生命生存这一道理就已为人熟知。但当火星勘探任务重点转向地表之下的时候,就有另一番景象开始浮出水面。 This discovery of water beneath the planet's South Pole is the result of radar echoes that were …