扩充频带放大

美丽新世界Brave New World 第18章(13)

Splendid! He kept his telescopic cameras carefully aimedglued to their moving objective; 精彩片他小心地调着望远摄影机的镜头，盯紧了那移动着的对象。 clapped on a higher power to get a close-up of the frantic and distorted

发表于:2018-12-07 / 阅读(126) / 评论(0)

美丽新世界

VOA慢速英语2013 EXPLORATIONS - The History of the Laser

EXPLORATIONS - The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can

发表于:2018-12-16 / 阅读(128) / 评论(0)

2013年VOA慢速英语(二)月

中英双语新闻朝鲜警告将先发制人

BBC News with Julia Candler. A senior member of North Koreas government has warned that his country would react with a pre-emptive nuclear strike if it saw signs that the US was preparing to launch an attack. Speaking to the BBC, the Vice Foreign Min

发表于:2018-12-20 / 阅读(148) / 评论(0)

中英双语新闻

美国科学60秒 SSS 2015-01-22

This is Scientific American's 60s Science. I'm Karen Hopkin. This will just take a minute. Think about the tools used by biologists, perhaps test tubes and microscopes come to mind. But what about diapers? No, it's not the investigators in their work

发表于:2018-12-24 / 阅读(180) / 评论(0)

2015年Scientific American(一)月

不择手段背单词(684):band带，条纹

band, [bnd] n 带，条纹＝strip；乐队；v 联合【例】jazz band 爵士乐队We banded together against the robbers 我们联合起来对付强盗。【类】stipple:dot＝striate:band 有点的由点组成＝有条纹的由条纹组成

发表于:2018-12-30 / 阅读(156) / 评论(0)

不择手段背单词

TED演讲:在体内寻找癌细胞的小颗粒(3)

In my lab, we recently made a cancer nanodetector 在我的实验室，我们最近研制出了一种癌症纳米检测器， that is so small that it could travel into the body and look for tumors. 小到可以进入全身血液循环并寻找肿瘤。

发表于:2019-01-03 / 阅读(146) / 评论(0)

TED演讲科学篇

SSS 2011-10-07

PCRthe polymerase chain reactionis a crucial tool. The DNA amplification technique is used in genome sequencing, forensics and the diagnosis of various diseases. To give researchers more genetic material to work with, a PCR instrument repeatedly heat

发表于:2019-01-08 / 阅读(141) / 评论(0)

Scientific American(十)月

SSS 2012-03-15

This is Scientific American 60 Second Science, I am Karen Hopkin, this will just take a minute. Every year, about 10 million tons of paper winds up in American landfills and incinerators, which is not only wasteful but adds CO2 to the atmosphere. Rec

发表于:2019-01-08 / 阅读(143) / 评论(0)

Scientific American(三)月

VOA标准英语2013--The History of the Laser

The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can go from the sci

发表于:2019-01-12 / 阅读(188) / 评论(0)

2013年VOA慢速英语(五)月

VOA慢速英语2012--The Laser: Futuristic Science Found at Your Local Store

EXPLORATIONS - The Laser: Futuristic Science Found at Your Local Store MARIO RITTER: Welcome to EXPLORATIONS in VOA Special English.Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one

发表于:2019-01-12 / 阅读(162) / 评论(0)

2012年VOA慢速英语(一)月

VOA标准英语2012--'Word on Street' Impacted Language in 2011

'Word on Street' Impacted Language in 2011 While 2011 is over, some of the words that came to define the past year are still very much with us, and may be for years to come. Since 2011 was an especially busy year for grassroots political action, many

发表于:2019-01-13 / 阅读(109) / 评论(0)

VOA标准英语2012年(一月)

TED演讲:关于听的艺术(6)

Because of course, the ear is, I mean, subject to all sorts of things. 这当然是因为，我是说，耳朵受制于很多因素。 The room we happen to be in, the amplification, the quality of the instrument,the type of sticks...etc., etc. 我们现

发表于:2019-01-18 / 阅读(123) / 评论(0)

TED演讲国际问题篇

【英语语言学习】镭射器的历史

Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can go from the science of the future to eve

发表于:2019-01-24 / 阅读(185) / 评论(0)

英语语言学习

VOA常速英语2007年-Scientist in Texas Runs NASA's Lunar Laser Prog

By Paul Sisco Washington 14 November 2007 At the McDonald Observatory in western Texas, a unique space program has been quietly underway for more than 30 years. It is called the Lunar Laser Ranging Program. VOA's Paul Sisco has more. Research scienti

发表于:2019-01-31 / 阅读(163) / 评论(0)

VOA常速英语2007年（十一月）

学个词Learn a Word 第1667-extended

今天我们要学的词是 extended。Extended 是形容词，延长的，长期的。He has been on extended sick leave since this summer. 他因为生病，从今年夏天就开始休长假。圣诞节前，Many retail stores are offering extended

发表于:2019-02-05 / 阅读(125) / 评论(0)

英语单词荟萃

布局全球支付宝把生意做到了北极圈!

Alipay, the payment platform of China's e-commerce giant Alibaba, announced last Tuesday that it has extended its service to the northernmost part of the world: the Santa Claus Village in Lapland, Finland. 国内电商巨头阿里巴巴旗下的支付平

发表于:2019-02-08 / 阅读(133) / 评论(0)

英语新闻

科学美国人60秒 SSS 诺贝尔物理学奖颁给激光控制实验者

Nobel in Physics for Controlling Laser Light 诺贝尔物理学奖颁给激光控制实验者 The main practical application of CPA so far has been in the eye surgery. It was the first one, and I think it is the one that is used by the most people fo

发表于:2019-02-14 / 阅读(187) / 评论(0)

2018年科学美国人10月

CCTV9英语新闻：Aleppo ceasefire extended by 48 hours

The ceasefire in the northern Syrian city of Aleppo that was due to expire last night has been extended by 48 hours. The extension comes after nearly 300 deaths in the city since the end of last month. Increased violence wrecked the 10-week-old parti

发表于:2019-02-18 / 阅读(155) / 评论(0)

cctv9英语新闻2016年

双语有声阅读：美国高等教育的革命

The Revolution in American Higher Education To produce the upheaval in the United States that changed and modernized the domain of higher education from the mid 1860's to the mid 1880's, three primary causes interacted. The emergence of a half dozen

发表于:2019-02-25 / 阅读(159) / 评论(0)

双语有声阅读

你知道band有哪些种类吗？

关于band你知道多少？除了pop and rock band=流行摇滚乐队，你还知道什么乐队吗？摇滚乐队叫rock band，经典的英伦摇滚乐队非Queen皇后乐队莫属啦。敲锣打鼓前进的是marching band=行进乐队。玩儿爵

发表于:2019-02-25 / 阅读(210) / 评论(0)

英文语法词汇

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学英语单词

alternate row seeding

aminophrminopyrinemoni test

antarctic treaty party (atp)