英语听力：自然百科 行星旅行指南：木星 Jupiter—16

  the processes that hit Io or operating on Europa as well, but on a less dramatic scale. and so was this constant change(s) in Jupiter's gravitational pull that is distorting the surface and that's generating heat in the interior.

 

This is a clue to Europa's biggest secret: its frozen icy shell floats above a vast hidden ocean of salty water, warmed by Jupiter's intense tidal embrace.

 

The ocean of Europa is thought to be over six miles/ deep, deeper than any on Earth. If so, there is more water hidden on Europe than on our own blue planet. And with water comes the possibility of life.

 

It sounds like a place where life might exist. It's protected from the radiation / environment underneath¹ all of the ice. And it's sort of the same sort of temperatures and pressures as we have on Earth’s oceans. I have friends in the oceanographic community. They want to get well right now. It’s like….., show me a hole, I get it, you know, I… it’s a robot that is submersible down there.

 

If there is life down here, the challenge is getting to it.

 

Bill Stone has gone where no man has gone before. A pioneering cave diver and aerospace² engineer, he now wants to go diving in an alien ocean some 500 million miles from home. And he's developing the technology to do it.

 

We started off with the idea of two things. One is the schedule，the SWIMS, has to be intelligent enough to understand where it is. What we wanted to create was a field microbiologist on silicon³ that did everything that a good microbiologist would go and do in the field.

 

His Depth X, and endurance / intelligent autonomous robots, have already proven themselves as very capable explorers in impossible underwater situations, mapping deep subterranean caverns in Mexico and now, exploring deep below ice-covered lakes in Antarctic

1 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。

2 aerospace   

adj.航空的，宇宙航行的

参考例句：

• The world's entire aerospace industry is feeling the chill winds of recession.全世界的航空航天工业都感受到了经济衰退的寒意。
• Edward Murphy was an aerospace engineer for the US Army.爱德华·墨菲是一名美军的航宇工程师。

3 silicon   

n.硅(旧名矽)

参考例句：

• This company pioneered the use of silicon chip.这家公司开创了使用硅片的方法。
• A chip is a piece of silicon about the size of a postage stamp.芯片就是一枚邮票大小的硅片。