SSS 2011-03-22
时间：2018-12-24 作者：英语课 分类：Scientific American(三)月
This is Scientific American’s 60-Second Science. I’m Cynthia Graber. This will just take a minute.
X rays are so common today you probably never stop to think about them. They help check a broken wrist, a sprained 1 ankle, the state of our teeth. But a little more than a century ago, x ray machines provided a revolution in medicine, allowing doctors to look inside the body. And now scientists in the Netherlands have gotten a chance to look at how the original technology functioned.
A first-generation anatomical imaging x ray machine was built in the Netherlands in early 1896. Advances to the technology came quickly, and that first machine was relegated 2 to an old warehouse 3. Then a year ago, a Dutch radiologist got his hands on the machine and dusted it off. He and a colleague tested it using a cadaver 4 hand. They published their research in the journal Radiology.
They found that an x ray image that requires just 21 milliseconds today would have taken 90 minutes in 1896. And the radiation exposure would have been 1,500 times greater than modern technology’s. Early x ray operators and researchers thus often suffered burns and other maladies. The scientists wrote that the images they produced with the ancient machine were severely 5 blurred—but still awe-inspiring.
Thanks for the minute. For Scientific American’s 60-Second Science, I’m Cynthia Graber.
- I stumbled and sprained my ankle. 我摔了一跤，把脚脖子扭了。
- When Mary sprained her ankles, John carried her piggyback to the doctors. 玛丽扭伤了足踝，约翰驮她去看医生。
- She was then relegated to the role of assistant. 随后她被降级做助手了。
- I think that should be relegated to the garbage can of history. 我认为应该把它扔进历史的垃圾箱。 来自《现代汉英综合大词典》
- We freighted the goods to the warehouse by truck.我们用卡车把货物运到仓库。
- The manager wants to clear off the old stocks in the warehouse.经理想把仓库里积压的存货处理掉。