From NPR News in Washington, I'm Nora Raum. President Bush is wrapping up his five-nation African tour with a visit to Liberia. He arrived today in the capital Monrovia named for President James Monroe. Liberia had been founded by freed slaves. The

发表于:2018-12-02 / 阅读(84) / 评论(0) 分类 2008年NPR美国国家公共电台二月

Percival Lowell's Work Led to the Discovery of the Planet PlutoWritten by Mario Ritter (THEME) VOICE ONE: Im Mary Tillotson. VOICE TWO: And Im Bob Doughty with the VOA Special English program People in America. Today, we tell about Percival Lowell wh

发表于:2019-01-02 / 阅读(86) / 评论(0) 分类 名人轶事

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

发表于:2019-01-03 / 阅读(38) / 评论(0) 分类 2018年VOA慢速英语(三)月

US Astronomer Proposes 364-Day Calendar 美天文学家提出一年为364天的历法 An American physicist is proposing a new calendar in which important days could fall on the same day of the week y

发表于:2019-01-03 / 阅读(109) / 评论(0) 分类 VOA2005(上)--环境科学探索

38 经度线的探索及其对安全航海的作用 DATE=6-20-01 TITLE=EXPLORATIONS #1957 - Longitude BYLINE=Oliver Chanler VOICE ONE: This is Steve Ember. VOICE TWO: And this is Bob Doughty with the

发表于:2019-01-09 / 阅读(96) / 评论(0) 分类 自然探索

Dim and Mysterious, the Planet Pluto Has Scientists' Attention 黯淡神秘的冥王星引起科学家关注 Don't pace the floor waiting for the results of the visit to this far-off hunk of rock, whi

发表于:2019-01-09 / 阅读(373) / 评论(0) 分类 VOA2005(上)--环境科学探索

VOICE ONE: I'm Mary Tillotson. VOICE TWO: And I'm Bob Doughty with the VOA Special English program PEOPLE IN AMERICA. Today, we tell about Percival Lowell whose work led to the discovery of Pluto. His efforts and imagination helped change the history

发表于:2019-01-11 / 阅读(76) / 评论(0) 分类 2010年VOA慢速英语(七)月

STEVE EMBER: This is Steve Ember. BOB DOUGHTY: And this is Bob Doughty with the VOA Special English program EXPLORATIONS. Today, we tell about how people learned an important piece of information necessary for safely sailing on the oceans. It is call

发表于:2019-01-11 / 阅读(71) / 评论(0) 分类 2010年VOA慢速英语(七)月

By David McAlary Washington 01 February 2006 Claims that our solar system has a 10th planet beyond Pluto are supported by a new finding by German and French astronomers. They calculate that it is bigg

发表于:2019-01-13 / 阅读(104) / 评论(0) 分类 2006年VOA标准英语(二月)

But if you look carefully, stars aren't spread smoothly across the whole sky. They are gathered together into a band that loops around the sky which we call the Milky Way. That bright strip across the sky with its extraordinary abundance of stars and

发表于:2019-01-23 / 阅读(50) / 评论(0) 分类 探索与发现2013年

The mystery of what could count for the quasars' extraordinary brightness was the hot topic in astronomy during the 1960s. As astronomers began to grapple with the new enigmatic objects that had been found by the radio telescopes, one astronomer, kee

发表于:2019-01-23 / 阅读(49) / 评论(0) 分类 探索与发现2013年

a high spatial resolution 高空间分辨率 a xenon-lamp 氙灯 abode n. 住所,住处 absence n. 缺乏 acceptor n. 接受者 access v. 接近 aerobic adj. 依靠氧气的,与需氧菌有关的

发表于:2019-02-06 / 阅读(91) / 评论(0) 分类 英文语法词汇

IN THE SECOND CENTURY A.D., THERE WAS A FAMOUS GREEK ASTRONOMER NAMED PTOLEMY. HE BELIEVED THAT THE EARTH WAS THE CENTER OF THE UNIVERSE. THE OTHER PLANETS AND THE SUN MOVED AROUND THE EARTH. PEOPLE ACCEPTED THIS BELIEF UNTIL THE MIDDLE OF THE 1500S.

发表于:2019-02-13 / 阅读(55) / 评论(0) 分类 名人认知系列 Who Was

But, as powerful as Rome may have been, they couldn't change the rules of the universe, and neither of these calendars add up to anywhere close to the time it takes us to orbit the sun. After a few years, the seasons are out of whack with the months,

发表于:2019-02-14 / 阅读(75) / 评论(0) 分类 留美老师带你每日说英文

Part 2. Scientists of the millennium(1). Keywords. discovery, invention, founder, idea, describe, theory, accept, develop, method, the first, start, base... on, secret. Vocabulary. type, mould, astronomer, condemn, withdraw, anatomical, vessel, arter

发表于:2019-02-15 / 阅读(101) / 评论(0) 分类 Step by Step 3000 第二册

A new world in your bedroom 卧室里的新天地 Amateur astronomers join the ranks of the planet hunters 业余天文学家加入猎星人行列 IN AN age of professionals, the ability of amateur scientists to make meaningful contributions has almo

发表于:2019-02-17 / 阅读(41) / 评论(0) 分类 经济学人综合

Coincidentally, at about the time that Einstein was affixing a cosmological constant to his theory, at the Lowell Observatory in Arizona, an astronomer with the cheerily intergalactic name of Vesto Slipher (who was in fact from Indiana) was taking sp

发表于:2019-02-17 / 阅读(47) / 评论(0) 分类 万物简史

BEIJING, May 20 (Xinhuanet) -- Scientists have discovered a Jupiter-sized exoplanet that is completely unbound from a host star, according the scientific journal Nature published Thursday. The research was conducted by astrophysicists from Osaka Univ

发表于:2019-02-17 / 阅读(58) / 评论(0) 分类 英语新闻

Neil had been younger than nearly all the other students when he first enrolled at Purdue. But hed been away for three years. When he returned in September of 1952, he was twenty-two and older than most students. He was more mature. He was ready to s

发表于:2019-02-21 / 阅读(61) / 评论(0) 分类 名人认知系列 Who Was

Meanwhile, a 45-meter wide asteroid has hurtled safely past earth after it came within 27-thousand kilometers, making it the closest known flyby for a rock of its size. The asteroid, named 2012 DA14 came closer to earth than many communication and we

发表于:2019-02-21 / 阅读(66) / 评论(0) 分类 英闻天下