火山生成的新岛可能提供火星生命的证据
文章来源:未知 文章作者:enread 发布时间:2021-04-07 08:45 字体: [ ]  进入论坛
(单词翻译:双击或拖选)
一座位于太平洋中的小岛可能会为科学家提供火星上存在生命的证据。这座岛屿其实是一座水下火山露出水面的部分,恰恰是这座火山的活动为一些简单生物的形成提供了可能性。而火星上也有类似的火山残留痕迹。
 
Our planet's youngest island has a tongue-twister of a name: Hunga Tonga Hunga Ha'apai. It exploded out of a huge submerged volcanic1 mountain in spectacular style, throwing ash and rock into the air.
 
Since the drama of its birth passed, though, scientists have been fascinated by the story of its survival. As Pacific waves lashed2 at it, researchers expected the island to erode3 away in months. But almost three years on, it's still there – a windswept volcanic cone4 of about two-and-a-half square kilometres.
 
Its entire life so far has been recorded on satellite images, and the researchers studying it have since been able to visit the island, collecting rock and soil samples. Jim Garvin from Nasa has been there and explained that it was a rare template for understanding how similar looking volcanoes on the surface of the Red Planet may have evolved.
 
But scientists don't expect it to stick around forever: storm action should eventually dismantle5 it. But they estimate they'll have about two to three decades to watch it very closely before its demise6.  


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1 volcanic BLgzQ     
adj.火山的;象火山的;由火山引起的
参考例句:
  • There have been several volcanic eruptions this year.今年火山爆发了好几次。
  • Volcanic activity has created thermal springs and boiling mud pools.火山活动产生了温泉和沸腾的泥浆池。
2 lashed 4385e23a53a7428fb973b929eed1bce6     
adj.具睫毛的v.鞭打( lash的过去式和过去分词 );煽动;紧系;怒斥
参考例句:
  • The rain lashed at the windows. 雨点猛烈地打在窗户上。
  • The cleverly designed speech lashed the audience into a frenzy. 这篇精心设计的演说煽动听众使他们发狂。 来自《简明英汉词典》
3 erode NmUyX     
v.侵蚀,腐蚀,使...减少、减弱或消失
参考例句:
  • Once exposed,soil is quickly eroded by wind and rain.一旦暴露在外,土壤很快就会被风雨侵蚀。
  • Competition in the financial marketplace has eroded profits.金融市场的竞争降低了利润。
4 cone lYJyi     
n.圆锥体,圆锥形东西,球果
参考例句:
  • Saw-dust piled up in a great cone.锯屑堆积如山。
  • The police have sectioned off part of the road with traffic cone.警察用锥形路标把部分路面分隔开来。
5 dismantle Vtlxa     
vt.拆开,拆卸;废除,取消
参考例句:
  • He asked for immediate help from the United States to dismantle the warheads.他请求美国立即提供援助,拆除这批弹头。
  • The mower firmly refused to mow,so I decided to dismantle it.修完后割草机还是纹丝不动,于是,我决定把它拆开。
6 demise Cmazg     
n.死亡;v.让渡,遗赠,转让
参考例句:
  • He praised the union's aims but predicted its early demise.他赞扬协会的目标,但预期这一协会很快会消亡。
  • The war brought about the industry's sudden demise.战争道致这个行业就这么突然垮了。
TAG标签: mountain life island
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