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英语听力精选进阶版 13280

时间：2019-05-30 09:04:35

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（单词翻译）

Earth-orbit ‘sweeper’ proposed

Report

After a half century of successes in space, low-Earth orbit has become a very messy place.

More than 17,000 pieces of space junk bigger than a hand's breadth are floating around up there; the largest of them weighs nearly ten tonnes.

The debris1 poses a growing risk to communication satellites and occasionally manned space missions. As time goes on catastrophic collisions become more likely, which would create even more debris.

Marco Castronuovo has a simple plan to solve the problem, starting with the largest, heaviest threats. He's proposed sending up a robotic mission that will skip between chunks2 of junk, affixing3 a little rocket to each one that will drive them out of orbit. The debris would then burn up harmlessly in the atmosphere over an ocean.

Each orbital housekeeper4 could clean up five objects a year, and would be sent on a seven-year mission.

It's a slow but straightforward5 solution to a problem that could otherwise leave low-Earth orbit completely unusable.

Jason Palmer, BBC News


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1 debris debris     
n.瓦砾堆，废墟，碎片
参考例句：
  • After the bombing there was a lot of debris everywhere.轰炸之后到处瓦砾成堆。
  • Bacteria sticks to food debris in the teeth,causing decay.细菌附着在牙缝中的食物残渣上，导致蛀牙。
2 chunks a0e6aa3f5109dc15b489f628b2f01028     
厚厚的一块( chunk的名词复数 )； （某物）相当大的数量或部分
参考例句：
  • a tin of pineapple chunks 一罐菠萝块
  • Those chunks of meat are rather large—could you chop them up a bIt'smaller? 这些肉块相当大，还能再切小一点吗？
3 affixing 5744b3b3c6bf9b7d389323054e11854d     
v.附加( affix的现在分词 )；粘贴；加以；盖（印章）
参考例句：
  • Formally approves a document by affixing a signature. 以签名的形式正式批准文件。 来自互联网
  • Forfixing, insulating, shock affixing parts or screws of many items such as appliances, stereos, and eyeglasses. 电器、音响响、光学学、电脑等的零件、螺丝固定绝缘、防震与接著。 来自互联网
4 housekeeper 6q2zxl     
n.管理家务的主妇，女管家
参考例句：
  • A spotless stove told us that his mother is a diligent housekeeper.炉子清洁无瑕就表明他母亲是个勤劳的主妇。
  • She is an economical housekeeper and feeds her family cheaply.她节约持家，一家人吃得很省。
5 straightforward fFfyA     
adj.正直的，坦率的；易懂的，简单的
参考例句：
  • A straightforward talk is better than a flowery speech.巧言不如直说。
  • I must insist on your giving me a straightforward answer.我一定要你给我一个直截了当的回答。

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