赖世雄教你学唱歌: Unit 7 Cotton Field

Earth and Sky:Electric Fish 发电鱼

Electric Fish 发电鱼 One way that Harold Zakon and his team find fish to study is to put electrical detectors into the bottom of murky streams in Venezuela. This works because certain fish emit pulses of electricity. Discover electric fish -- on tod

万花筒 2008-06-04&-06-05

Amid all the tradition and history of Katmandu, a profound change is in the air. In fact, it might literally clear the air, reducing the choking pollution which has blighted this congested valley. The streets of the capital are gradually being taken

VOA慢速英语--科学家:蜘蛛利用电场在空气中移动

Scientists: Spiders Use Electric Fields to Move through Air Scientists have long wondered how spiders can use the webbing they make to fly. The 19th century English naturalist Charles Darwin commented on their behavior when very small spiders landed

SSS 2011-02-24

If you splashed down in the Atlantic, you'd flounder on which way to swim. But a hatchling loggerhead turtle would know just where to paddleby reading the Earth's magnetic field. Scientists knew turtles can pinpoint latitude this way, because the fie

【轻松英文阅读】龙卷风

Tornados are one of the most frightening weather phenomena on our planet. Not only are they unique in how they form, but also in how they are measured . A tornados intensity is defined by the Enhanced Fujita Scale. On this scale, the intensity of the

每日一词【146】field：空旷的地方

今天我们要学的词组是field。 Field多指空旷的地方。比如原野， 旷野, 还有油田 - oil field, 战场 - battlefield，等等。作为动词， field有回答、答复的意思。 比如，白宫发言人常常要回答一些很棘

Electric Bike Ban in New York Hurts Food Delivery Workers

A ban on electric bicycles in New York City is hurting delivery workers who depend on them to earn a living. Many of the workers are immigrants. Electric bicycles, or e-bikes, have foot-powered pedals like other bicycles. But they also have electric-

Cotton Field

人教版小学英语五年级下--UNIT SIX A field trip

UNIT SIX A field trip [00:07.34]Let's chant [00:09.82]Let's go on a field trip.There's so much to do. [00:17.21]We can collect leaves,and take picctures,too.We can watch the ants and see what they eat [00:24.92]Let's go on a field trip.It's quite a t

VOA常速英语2015--科学家研究地球磁场

科学家研究地球磁场 WASHINGTON Most of us hardly ever think about the Earth's magnetic field. We might be aware that it helps guide birds as they migrate and ensures that our compasses point north, but not realize that it is one of the crucia

VOA标准英语2015--马里兰大学实验室复刻地球磁场

Scientists Take on Earths Magnetic Field 马里兰大学实验室复刻地球磁场 WASHINGTON Most of us hardly ever think about the Earth's magnetic field. We might be aware that it helps guide birds as they migrate and ensures that our compasses p

2018年CRI Electric cars unveiled at Beijing Motor Show

Automakers are rolling out their new electric vehicles at the 2018 Beijing Motor Show, the motor industry's biggest sales event this year. Carmakers expect new growth in China's market despite the looming threat of a trade war between China and the U

英语听力：自然百科 地球力场 Earth's Force Field—19

As the reversal approaches, the decay of our magnetic field will continue and cosmic radiation will get increasingly close to the Earth's surface. As the reversal approaches, the decay of our magnetic field will continue and cosmic radiation will get

英语听力：自然百科 地球力场 Earth's Force Field—4

Scientists believe that the South Atlantic Anomaly, is a sign of a global decline in the magnetic field. Evidence of this comes from a surprising source. Dr. Mimi Hill uses pottery to uncover the secrets of earth's magnetic past. Ancient pots tell us

英语听力：自然百科 地球力场 Earth's Force Field—6

It's clear from the fact that the Martian crust is strongly magnetized, that there must have been a magnetic field on Mars in the past, that the only way we know to magnetize rocks is for them to form in the presence of magnetic field. Why did Mars l

英语听力：自然百科 地球力场 Earth's Force Field—10

Larry Newitt from the Geological Survey of Canada charts the movement of the magnetic North Pole as it wanders the icy reaches of northern Canada. To determine where the magnetic pole / is, we can't rely on one single observation. What I try to do is

英语听力文摘 English Digest 474、海洋独特的磁场

Motional Induction Last time, we talked about motional induction , a phenomenon by which the ocean generate s a magnetic field. It works like this: earth has its own magnetic field. The ocean has plenty of charged atoms in it, in the form of dissolve

英语听书《海底两万里》第63期 第6章 开足马力(5)

Maybe, I added, it's no more approachable than an electric eel or an electric ray! 也许，我又说，我们不能接近它，就像不能接近一条电鳗，或一个水雷那样! Right, the commander replied. And if it has their power to electro

Electric motor made in single molecule

BEIJING, Sept. 6 (Xinhuanet) -- Scientists from Tufts University of the U.S. have created the world's smallest electrical motor in a single molecule. The finding was published in the journal Nature Nanotechnology on Monday. In the research, scientist