火星上发现液态水湖泊
文章来源:未知 文章作者:enread 发布时间:2018-07-26 08:23 字体: [ ]  进入论坛
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A massive underground lake has been detected for the first time on Mars, raising hopes that more water -- and maybe even life -- exists there, international astronomers1 said Wednesday.
 
火星上首次发现一个大型地下湖泊,这为火星上有更多的水、甚至是生命带来了希望。
 
Located under a layer of Martian ice, the lake is about 12 miles (20 kilometers) wide, said the report in the US journal Science.
 
It is the largest body of liquid water ever found on the Red Planet.
 
"Water is there. We have no more doubt," co-author Enrico Flamini, the Italian space agency's Mars Express mission manager, told a press conference.
 
Mars is now cold, barren and dry but it used to be warm and wet. It was home to plenty of liquid water and lakes at least 3.6 billion years ago.
 
Scientists are eager to find signs of contemporary water, because such discoveries are key to unlocking the mystery of whether life ever formed on Mars in its ancient past, and whether it might persist today.
 
"This is a stunning2 result that suggests water on Mars is not a temporary trickle3 like previous discoveries but a persistent4 body of water that provides the conditions for life for extended periods of time," said Alan Duffy, an associate professor at Swinburne University in Australia, who was not involved in the study.


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1 astronomers 569155f16962e086bd7de77deceefcbd     
n.天文学者,天文学家( astronomer的名词复数 )
参考例句:
  • Astronomers can accurately foretell the date,time,and length of future eclipses. 天文学家能精确地预告未来日食月食的日期、时刻和时长。 来自《简明英汉词典》
  • Astronomers used to ask why only Saturn has rings. 天文学家们过去一直感到奇怪,为什么只有土星有光环。 来自《简明英汉词典》
2 stunning NhGzDh     
adj.极好的;使人晕倒的
参考例句:
  • His plays are distinguished only by their stunning mediocrity.他的戏剧与众不同之处就是平凡得出奇。
  • The finished effect was absolutely stunning.完工后的效果非常美。
3 trickle zm2w8     
vi.淌,滴,流出,慢慢移动,逐渐消散
参考例句:
  • The stream has thinned down to a mere trickle.这条小河变成细流了。
  • The flood of cars has now slowed to a trickle.汹涌的车流现在已经变得稀稀拉拉。
4 persistent BSUzg     
adj.坚持不懈的,执意的;持续的
参考例句:
  • Albert had a persistent headache that lasted for three days.艾伯特连续头痛了三天。
  • She felt embarrassed by his persistent attentions.他不时地向她大献殷勤,使她很难为情。
TAG标签: water lake Mars
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