(单词翻译:单击)
听力文本
From VOA Learning English, this is the Technology Report.
It seems that electronic devices just keep getting smaller. Scientists in the United States have announced the creation of the first transistor with only two dimensions.
A transistor is a small electronic device that transfers or carries electronic current. The device helps to create an electrical circuit that provides power to other devices. Scientists hope these new 2D transistors will be used for building high-resolution displays that need very little energy.
Two groups of scientists created these 2D transistors. One group is at the Argonne National Laboratory outside of Chicago, the other group is at the University of California. They report that the transistors are only a few atoms thick, any layer of any material that thin may be considered two-dimensional.
Usually transistors are made with the element silicon. But the scientists say they use materials that have even better electronic properties. Computer processors, memory chips, TV screens and other electronic devices contain billions of silicon-based transistors. But these very small electrical parts have certain limitations.
Dimitris Ioannou is an electrical engineering professor at George Mason University. He says the traditional transistor has been improved as much as it can be. He adds that researchers have been looking for new materials with special features. He says researchers want transistors to be see through and soft.
"If the layers are very thin the transistor can become flexible, so it doesn't have to be rigid, like it would be in a silicon chip. So people can think of applications like wearable electronics, like, you know, television screens and other things," said Ioannou.
These new transistors can also carry higher current. They also can move the current much faster than traditional transistors. This is important for high-definition screens.
Dimitris Ioannou says the scientific success could prove very useful in the future.
"This is the first time every layer is a single [atom] layer, more or less, and that's the novelty of it. Now, how good and how useful it will be, it's still in research phase, but it certainly is an advance," said Ioannou.
Scientists say there is no good method for printing a large number of these new transistors on one base material, but they believe that someday it may be possible.
And that's the VOA Learning English Technology Report. For more technology stories, go to our website learningenglish.voanews.com. Give us a like on the VOA Learning English Facebook page. Follow us on twitter at VOA Learning English. You can also watch videos on the VOA YouTube Channel. I'm Jonathan Evans.
文本来自51voa，译文属可可原创，仅供学习交流使用，未经许可请勿转载
词汇解释
1.transistor n. 晶体管
Every transistor has at least three electrodes.
每个晶体管至少有三个电极。
2.high-resolution n. 高分辨率
There are satellites that supply high - resolution photography.
有些卫星能提供高分辨率的摄影图像。
3.rigid adj. 严格的；僵硬的，死板的；坚硬的；精确的
Several colleges in our study have rigid rules about student conduct.
我们调查中的几所学院对学生行为举止都有过于严格的规定。
4.novelty n. 新奇；新奇的事物；新颖小巧而廉价的物品
In the contemporary western world, rapidly changing styles cater to a desire for novelty and individualism.
在当代西方世界，快速变换着的款式迎合了人们对新奇和独特性的追求。
内容解析
1.Usually transistors are made with the element silicon.
be made with 用…制成；用…制作
The preparations were made with Teutonic thoroughness.
各项准备工作均以日耳曼人缜密的精神完成。
Egg mayonnaise is made with mayonnaise and hard - boiled eggs.
鸡蛋美乃滋是用蛋黄酱和煮老的鸡蛋做成的。
参考译文
这里是美国之音慢速英语科技报道。
电子设备看起来在变得越来越小，美国科学家宣布创造出首个二维晶体管。
晶体管是用来传述电流的小电子设备，能帮助形成电路来为其他设备提供电力。科学家希望这种二位晶体管能用来制造需要极少能量的高分辨率显示器。
两组科学家创造了这种二位晶体管，一组是位于芝加哥郊外的阿贡国家实验室，另一组是加州大学。他们报告称这种晶体管只有几个原子那么厚，这么厚的任何材料都可称作是二维的。
通常晶体管是由硅元素制成，但科学家称使用了具有更好电子性能的材料。电脑处理器、存储芯片、电子屏幕和其他电视设备都有数十亿个硅基晶体管。但这些小电子元件有局限。
伊奥努是乔治·梅森大学的电气工程教授，他说传统的晶体管已经达到潜能的极限。他说研究者一直在寻找具备特殊性能的新材料，他说研究者希望晶体管能透明、柔软。
“如果各层很薄，那么晶体管就更灵活，所以就不必要像硅芯片那么有刚性。所以人们就能设想可穿戴电子、电子屏幕这样的设备。”
这种新晶体管导电性更好，其导电速度快于传统晶体管，这对高分辨率屏幕来说很重要。
伊奥努说这一科学成就将来会很有用。
“首次能实现每层都是单个原子层，这就是其新奇之处。现在，它的优点和用途正在研究阶段，但这绝对是个进步。”
科学家称没有尚没有找到基于一种基础材料大量打印这种新晶体管的办法，但他们相信总有一天能做到。
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