[地物] 磁静日太阳变化

科学家改进空间天气预报准确性

Scientists Improve Space Weather Forecast Accuracy 科学家改进空间天气预报准确性 At one time, scientists thought the space between Earth and Sun was a vacuum . But we now know that the su

发表于:2018-11-29 / 阅读(237) / 评论(0)

VOA2005（下）--环境科学探索

英语童话故事：最后一天 Last Day

Charlotte and Wilbur were alone. Wilbur lay resting after the excitement and strain of the ceremony. His medal still hung from his neck; by looking out of the corner of his eye he could see it. 夏洛和威尔伯单独待着。经过颁奖典礼上一番

发表于:2018-12-03 / 阅读(159) / 评论(0)

英文童话故事

太阳科普第15期

The key difference of course is that a sunspot's 最关键的不同点在于太阳黑子 an awful lot bigger and so the total energy, 大得多，所以太阳磁场内 or the amount of energy in the magnetic field 所含的总能量大得惊人 on th

发表于:2018-12-07 / 阅读(263) / 评论(0)

太阳科普

太阳科普第14期

It sits a million miles away from the Earth 它位于距地球一百万里处的 at the Lagrangian point 拉格朗日点 where the gravitational pull from the Earth and the sun is equal. 此处地球和太阳的引力相等 Fixed in space it has an u

发表于:2018-12-07 / 阅读(209) / 评论(0)

太阳科普

太阳科普第16期

The auroras dancing displays of celestial light 在天空中熠熠生辉的极光 are caused by particles from the solar storm smashing 是太阳风暴夹带的微粒 through the magnetic field at the poles. 撞击地球两极磁场的结果 When the

发表于:2019-01-02 / 阅读(221) / 评论(0)

太阳科普

VOA慢速英语2013 Pictures Connect People for Earth Day 2013

Pictures Connect People for Earth Day 2013 From VOA Learning English, welcome to This Is America. I'm Kelly Jean Kelly. And I'm Mario Ritter. April twenty-second is Earth Day. Former United States Senator Gaylord Nelson started the observance in nine

发表于:2019-01-12 / 阅读(140) / 评论(0)

2013年VOA慢速英语(五)月

VOA慢速英语2011--NASA’s Aquarius Satellite Will Help Sc

EXPLORATIONS - NASAs Aquarius Satellite Will Help Scientists Learn About Salt Levels in the Sea STEVE EMBER: Im Steve Ember. DOUG JOHNSON: And Im Doug Johnson with EXPLORATIONS in VOA Special English. Today we tell about an American space agency proj

发表于:2019-01-12 / 阅读(158) / 评论(0)

2011年VOA慢速英语(六)月

VOA慢速英语2015 卫星关注太阳风暴并向地球发送警报

Satellite Will Watch Sun Storms, Send Warnings to Earth 卫星关注太阳风暴并向地球发送警报 A new satellite is travelling 1.5 million kilometers over a 110-day period to enter an orbit of the sun. It is called DSCOVR -- the Deep Space Cl

发表于:2019-01-12 / 阅读(178) / 评论(0)

2015年VOA慢速英语(三)月

VOA慢速英语2014 如何抵御太阳风暴发表

How to Weather a Solar Storm 如何抵御太阳风暴发表 Powerful winds from the sun affect the earths atmosphere. These solar winds cause the beautiful aurora borealis, also known as the northern lights. These winds are also responsible for many

发表于:2019-01-12 / 阅读(228) / 评论(0)

2014年VOA慢速英语(十)月

2007年VOA标准英语-NASA Mission to Seek Polar Lights' Energy Sourc

By David McAlary Washington 18 February 2007 The U.S. space agency NASA has launched five satellites - the most ever from one rocket - to locate the source of energy in Earth's magnetic field that triggers the colorful, dancing auroras over the north

发表于:2019-01-12 / 阅读(196) / 评论(0)

2007年VOA标准英语（二月）

Daily English-2015年01月12日

Some people dream of success while others wake up and work hard at it. 有些人还在继续梦想成功时，另一些人却已经醒来努力为之奋斗了。图片1

发表于:2019-01-19 / 阅读(134) / 评论(0)

Daily English-2015.1

英语听力：自然百科地球力场 Earth's Force Field—1

The solar system is a hostile place. Earth is under attack from deadly cosmic radiation. Life here is only possible, because it's protected by the magnetosphere, an invisible force field that cocoons the planet. But new evidence reveals that this vit

发表于:2019-01-22 / 阅读(146) / 评论(0)

自然百科2011年

英语听力：自然百科地球力场 Earth's Force Field—2

Radiation causes damage at the most fundamental level. It mutates the blueprint of life, DNA. Earth's magnetosphere is our crucial defense. It's so fundamental to our evolution and continued existence that the race is on to understand why it's changi

发表于:2019-01-22 / 阅读(138) / 评论(0)

自然百科2011年

英语听力：自然百科地球力场 Earth's Force Field—16

During its magnetic cycle, the Sun undergoes periodic changes in activity. Every 11 years, it enters solar maximum. This 11 years cycle of solar activity has peaks where theres lots of solar storms. And right now where the sun is taking a little napp

发表于:2019-01-22 / 阅读(197) / 评论(0)

自然百科2011年

英语听力：自然百科地球力场 Earth's Force Field—3

In polar regions where the magnetic field is / weakest, auroras glow in the sky. These dazzling displays of colored lights form when solar particles slam into gases in our atmosphere causing them to glow. The stronger the solar wind, the more dramati

发表于:2019-01-22 / 阅读(185) / 评论(0)

自然百科2011年

英语访谈对话 468 The Perfect Day

Yeah, I think I'm gonna talk about what I would consider a perfect day. Ah, of course, that day wouldn't be a working day. It would be a day off and it would have some of my favorite things in life which would be like eating, relaxing, and playing sp

发表于:2019-01-30 / 阅读(162) / 评论(0)

英语访谈对话

Magnetic Bubbles Detected at Edge of Solar System

The latest data from the twin Voyager spacecrafts suggest the outer edge of the solar system is not smooth but filled with giant magnetic bubbles. Scientists say the turbulent bubbles are the result of the interaction between the Suns magnetic field

发表于:2019-02-06 / 阅读(200) / 评论(0)

英语新闻

英语听力：自然百科金星和水星旅行指南 Venus and Mercury-7

Like Mercury, the earth takes a beating from the sun's violent temper. Flares, sun storms and other solar hissy fits can cause electronic mayhem for the satellites that roam above our heads. Fortunately, the earth is protected from this radiation by

发表于:2019-02-15 / 阅读(297) / 评论(0)

自然百科2012年

GRE试题一(2)

16. UPBRAlD : REPROACH :: (A) dote : like (B) lal: : stray (C) vex : please (D) earn : desire (E) recast : explain Directions: Each passage in this group is followed by questions based on its content.

发表于:2019-02-21 / 阅读(272) / 评论(0)

实用英语

英语听力—环球英语 1155 Northern Lights

Voice 1 Welcome to Spotlight. Im Rena Dam. Voice 2 And Im Ryan Geertsma. Spotlight uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 Picture a dark black sky. Suddenl

发表于:2019-02-21 / 阅读(154) / 评论(0)

环球英语 Spotlight

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学英语单词

be up to monkey business

Bering Time

birthcoat

bode-shannon approach