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By Gary Garriott Broadcast: September 15, 2003 This is Robert Covent with the VOA Special English Development Report. 1)Clay is found almost everywhere in the world. It is formed by the action of wind
The Strange and Beautiful World of Arches National Park 犹他州拱门国家公园:奇怪而美丽的世界 This week on our national parks journey, we travel to Utah. The western state is home to several of the most popular national parks in Americ
CHAPTER SIX Beast from Air There was no light left save that of the stars. When they had understood what made this ghostly noise and Percival was quiet again, Ralph and Simon picked him up unhandily and carried him to a shelter. Piggy hung about near
Predicting Earthquakes Can earthquakes be predicted? Scientists are working on programs to predict where and when an earthquake will occur. They hope to develop an early warning system that can be use
The moon is in the sky. He looks at the moon. It is round and white. It is bright. It has mountains. It has valleys. It has rocks. It has dirt. He thinks about the moon. He wonders about it. Maybe there is water on the moon. Maybe tiny animals live o
And ocean salinity of course represented only the merest sliver of my ignorance. 当然,海水的咸度只是我不知道的事情中的极小部分。 I didn't know what a proton was, or a protein, didn't know a quark from a quasar,我不知道什么
He wears gloves and cleans his tools with alcohol to avoid contaminating the ancient salt samples with modern microorganisms.
Scientists and designers in London have found a possible solution to the problem of plastic bottle waste. 英国伦敦的科学家和设计师发现一个可以解决塑料瓶垃圾问题的方法。 The group at Skipping Rocks Lab has made a water b
Bitter sweet thing. Could this be a dream Or just the same nightmare that keeps me awake? Feel it in my brain. A tall shot of pain. Pour a little OUT now for the love that we've made. I feel it in the morning. Youre still here in the morning. I see y
Stunning 'Postcard' Sent from Mars The U.S. Spirit spacecraft has sent its first color postcard from Mars. It is the sharpest image ever taken of Mars or any other planet. The image from the color pan
This is Scientific Americans 60-Second Science, Im Cynthia Graber. This will just take a minute. Glaciers slowly grind their way over mountains and plains, moving immense boulders and carving out fjords. Thats true in temperate regions, where glacier
Calcium 钙 Calcium is a kind of mineral. 钙是一种矿物. It is found in rocks, sea water and soil. 它常见于岩石、海水和土壤中。 Calcium is important for human health. 钙对人体健康很重要。 Then do we have to eat rocks or s
Sand 沙子 If you look around you, you can find sand very easily. 你若环顾四周,就很容易发现沙子。 Sand comes from rocks. 沙子源自岩石。 Each grain of sand is less than 2 millimeters in diameter. 每粒沙子的直径小于两毫
[00:-1.00]The Race to the Pole [00:-2.00]On I June,1910,Captain Scott left London to begin his Antarctic expedition. [00:-3.00]On his way,he received a telegram from the Norwegian explorer Roald Amundsen: [00:-4.00]I'm going South.So the race to the
Chapter 1 第一章 The Setting of the Stage 人类历史舞台的形成 We live under the shadow of a gigantic question mark. 人类一直以来都生活在一个巨大问号的阴影下面 Who are we? 我们是谁? Where do we come from? 我们从哪
Some of the Monkeys seized the Tin Woodman and carried him through the air until they were over a country thickly covered with sharp rocks. 好几只猴子捉住了铁皮人,带着他飞出国境,直飞到堆着厚厚的尖锐石头的深谷。 H
The hour hand on a clock moves about ten thousand times faster than the flowing rocks of the mantle. 钟面上时针的移动速度,比地幔岩石的流动速度,要快大约1万倍。 The movements occur not just laterally as the Earth's plates
Still less could we send up a shipload of space cowboys to do the job for us, as in the movie Armageddon; 我们更不可能发射一飞船警察去为我们干这个活儿,就像电影《善恶大决战》里的场面那样; we no longer possess
That explained where all the sediment went. It was being returned to the bowels of the Earth. It also explained why ocean floors everywhere were so comparatively youthful. None had ever been found to be older than about 175 million years, which was a