英语听力：自然百科 行星旅行指南：火星 Mars—14

 When we reconstruct our imaginations, Mars are 3 billion years ago. We tend to make it like Earth, warm and clozzying, but it wasn't. Mars back in its wettest warmth face which probable like Earth today in its coldest regions. So I'm imagining a place where snow and ices melting in the summer deform¹ tracing and pounds of strings² of ice-covered lakes. Its cold, its wet, but it could be rich with life.     This is the Mars that we want our astronauts to get there hands on, to bring back and study the weep Mars of odd where we might find the evidence of life. The fourth rock from the sun has always had a special car to play, the chances of meeting Martians. And in recent years, the odds³ of a closing counter have been steadily⁴ improving. 

    If you want to find life on Mars, first you need to find water. And not all of the planet's water story is inch history. There's been plenty of frozen underground evidence detected from orbit, but scientists need to touch and test to be sure. 

    In 2008, they finally got their opportunity when NASA's Flanders made it daring approach to the high Martian Arctic. 

    There was not ever more excited be in my life of landing in safely on Mars. I will be through the opposite, I will be through a landing was not successful, and I didn't want them to happen again. 

    The landing was not only perfect, but the engine expose suspicious wet patches directly underneath⁵ the spacecraft. Water eyes was just a few scrays away. 

    We did find water ice and we found the soiling connection to it has caulsing carbonate, a compound at forms in the presents of liquid water.

1 deform   

vt.损坏…的形状；使变形，使变丑；vi.变形

参考例句：

• Shoes that are too tight deform the feet.(穿)太紧的鞋子会使脚变形。
• Ice crystals begin to deform measurably.冰晶就产生某种程度的变形了。

2 strings   

n.弦

参考例句：

• He sat on the bed,idly plucking the strings of his guitar.他坐在床上，随意地拨着吉他的弦。
• She swept her fingers over the strings of the harp.她用手指划过竖琴的琴弦。

3 odds   

n.让步，机率，可能性，比率；胜败优劣之别

参考例句：

• The odds are 5 to 1 that she will win.她获胜的机会是五比一。
• Do you know the odds of winning the lottery once?你知道赢得一次彩票的几率多大吗？

4 steadily   

adv.稳定地；不变地；持续地

参考例句：

• The scope of man's use of natural resources will steadily grow.人类利用自然资源的广度将日益扩大。
• Our educational reform was steadily led onto the correct path.我们的教学改革慢慢上轨道了。

5 underneath   

adj.在...下面，在...底下；adv.在下面

参考例句：

• Working underneath the car is always a messy job.在汽车底下工作是件脏活。
• She wore a coat with a dress underneath.她穿着一件大衣，里面套着一条连衣裙。