VOA标准英语2018--特朗普宣布关闭美国电波钟

WHITE HOUSE President Donald Trumps administration wants to shut down U.S. government radio stations that announce official time, a service in operation since World War II. WWV and WWVB in the state of Colorado and WWVH on the island of Kauai in the

Alien Neighbors 寻访外星人 2

From a planet.......let me get out of here....stay where you are.... Humanoid aliens have been good business in the 20th century. B moviemakers in particular have found a winning formula in showing se

【轻松英文阅读】科学家的新发现

Recently, some researchers in Australia were excited about messages from a distant galaxy. But it turns out that the signals were from a completely different source. The scientists at Parkes Observatory in Australia specialize in radio bursts- short

国家地理-2008-04-17 New Search For ET 寻找外星人（上）

Is anyone out there? For over 40 years scientists have been searching for extraterrestrial intelligence, but theyve found nothing. Now the new Allen Telescope Array, a string of 350 radio telescopes, is being built 300 miles north of San Francisco a

365个英语简短小故事-123. Adventurer Disappears

Steve Magellan, world-famous adventurer, has been missing for two days. The man who soared around the world by himself in a balloon took off in a single-engine airplane from a private airport in Nevada. He left at noon for a three-hour flight. The we

Earth and Sky:Plant Signals 植物的语言

Plant Signals 植物的语言 Can plants smell and taste in the same way that animals do? Can they talk to each other and to insects? Learn how scientists hope to unravel some of the mysteries of plant senses -- on today's Earth and Sky. JB: This is Eart

Norway to End FM Radio Broadcasts

On January 11, Norway became the first country to begin turning off signals from its FM radio network. The Norwegian stations will instead use only digital audio broadcasting, called DAB. FM, or frequency modulation, radio stations have been in opera

科学家发现宇宙第一颗恒星形成证据

Astronomers: Evidence Found of First Stars Astronomers have observed what they believe is the formation of the universe 13.6 billion years ago, when the earliest stars were just starting to shine. The astronomers say their observations may also have

VOA慢速英语2018--US Timekeeping Stations Might Go Silent

Three radio stations in the United States mainly broadcast one thing: the official time. The three are radio stations WWV and WWVB, in the state of Colorado, and WWVH, on the island of Kauai in Hawaii. They send out signals that are used by millions

VOA标准英语2008年-Monkeys Use Brain Signals To Operate Robotic Ar

By Jessica Berman Washington 28 May 2008 Monkeys have successfully operated robotic arms to feed themselves with human-like precision, activating a mechanical device with signals from their brain. Researchers say the technique could eventually be use

高中英语人教版高二下讲解11

[00:42.81]What do you usually say if you dial a wrong number? [00:48.35]I'm sorry,I think I dialled the wrong number. [00:58.38]What does Steve ask Pippa to do? [01:02.43]To go to a lecture [01:07.29]When and where is the lecture going to be given? [

高中英语人教版高二下11

[00:04.78]Lesson 89 1 Dialogue [00:11.05]STEVE:Hello.Can I speak to Pippa,please? [00:13.27]喂!我可以找彼帕接电话吗? [00:15.49]VOICE:There's no Pippa here.This is 8686087. [00:19.51]这里没有彼帕这个人,这里的号码是8686087. [0

与美国小学生一起学英文第4册 第12期:天线

Antenna 天线 An antenna is used for radio, television, radar and so on. 天线用于广播、电视、雷达等等。 It works in air and under the water. 它适用于空中和水下。 Antennas send signals and receive signals. 天线发送和接收

英语听力：自然百科 New Search For ET 寻找外星人 上

Ok, imagine you are at the beach, in order to figure out if there are fish in the ocean, you dip an empty glass into the water and look inside. No fish in the glass? Well, there must be no fish in the ocean. Not too logical, is it? But that's exactly

VOA标准英语2013--Relief Radio Station Signals Dire State of Communications in Tacloban, Philippines

Relief Radio Station Signals Dire State of Communications in Tacloban, Philippines TACLOBAN, PHILIPPINES All of Taclobans 15 radio stations were knocked off the air when Typhoon Haiyan devastated the Philippine city of 220,000 people. A response with

经济学人254:低成本雷达 值得一看的节目

Science and technology 科学技术 Low-cost radar 低成本雷达 A programme worth watching 值得一看的节目 How air-traffic control can use television signals to plot aircraft 空中交通管制局如何利用电视信号找出飞行器位置？

Wifi信号弱？放置地点有问题

Deciding where to place a Wi-Fi router at home to minimise signal blackspots is a fine art. But a physicist has attempted to tackle the problem by mathematically working out the optimum position for a router. He studied how walls and reflections affe

10个可替换的人体器官

Human bodies are frail, easily damaged packages full of parts that can never fully come back once lost. Luckily, researchers worldwide are working on replacing every bit of the body to make us all cyborgs. 人的身体是十分脆弱的，有些娇弱的

经济学人219:寻找外星人

Science and technology 科学技术 Searching for aliens 寻找外星人 The wow factor 防止再次意外 A new citizen-science project will improve the chances of finding ET 一个新的平民科学项目可以增大找到地外智慧的机会 EVER

黑匣子的工作原理

A possible break in the mystery of the missing Malaysia Airlines Flight 370 plane came when ships detected pings consistent with the aircraft's black box. But how does a black box actually work? Black boxes, or flight recorders, are electronic device