美宇航局选定2020火星探测器着陆点

时间：2019-05-31 06:52:50

（单词翻译:单击）

NASA has chosen Jezero Crater1 as the landing site for its Mars 2020 rover mission scheduled to launch in July next year.
 
美国宇航局已选定耶泽洛陨石坑为2020年火星探测车的降落地点，此次任务计划于明年七月份发射。
 
 
According to NASA, the rover will seek signs of ancient habitable conditions and past microbial life, and also collect rock and soil samples to store in a cache on the planet's surface.
 
On ancient Mars, water carved channels and transported sediments2 to form fans and deltas3 within lake basins. "Examination of spectral4 data acquired from orbit show that some of these sediments have minerals that indicate chemical alteration5 by water," NASA said on its website.

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1 crater WofzH     
n.火山口，弹坑
参考例句：
  • With a telescope you can see the huge crater of Ve-suvius.用望远镜你能看到巨大的维苏威火山口。
  • They came to the lip of a dead crater.他们来到了一个死火山口。
2 sediments 8b3acb612b624abdf2c2881bc6928565     
沉淀物( sediment的名词复数 )； 沉积物
参考例句：
  • When deposited, 70-80% of the volume of muddy sediments may be water. 泥质沉积物沉积后，体积的70-80％是水。
  • Oligocene erosion had truncated the sediments draped over the dome. 覆盖于穹丘上的沉积岩为渐新世侵蚀所截削。
3 deltas 43c57dfa20ce8f0825105bdcb3548822     
希腊字母表中第四个字母( delta的名词复数 )； （河口的）三角洲
参考例句：
  • Tidal channels, deltas, and washover fans are characteristically associated with offshore bars. 潮汐水道、三角洲和冲刷扇典型地与滨外砂洲伴生在一起。
  • I know many of the early civilizations prospered on deltas. 我知道很多古老的文明都是在三角洲上蓬勃发展起来的。
4 spectral fvbwg     
adj.幽灵的，鬼魂的
参考例句：
  • At times he seems rather ordinary.At other times ethereal,perhaps even spectral.有时他好像很正常，有时又难以捉摸，甚至像个幽灵。
  • She is compelling,spectral fascinating,an unforgettably unique performer.她极具吸引力，清幽如鬼魅，令人着迷，令人难忘，是个独具特色的演员。
5 alteration rxPzO     
n.变更，改变；蚀变
参考例句：
  • The shirt needs alteration.这件衬衣需要改一改。
  • He easily perceived there was an alteration in my countenance.他立刻看出我的脸色和往常有些不同。

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