TED演讲:科学解释之新探

I'm sure that, throughout the hundred-thousand-odd years of our species' existence, and even before, 我十分确信在人类诞生以来的大概10万多年，甚至比这更长的时间里 our ancestors looked up at the night sky, and wondered what

VOA慢速英语204 AS IT IS 2014-01-26 Separated Families Meet in North Korea for a Rare Reunion 相隔50年被分离的家庭在朝鲜重聚

AS IT IS 2014-01-26 Separated Families Meet in North Korea for a Rare Reunion 相隔50年被分离的家庭在朝鲜重聚 Welcome to As It Is from VOA Learning English. Im Mario Ritter in Washington. Today, we hear about a group of Koreans who recen

SSS 2010-01-20

Ever wonder what your French fries were fried in? Like bumbling burglars who leave fingerprints at a crime scene, cooking oils leave their own clues. And by measuring the carbon isotopes in French fries, University of Hawaii researchers found that on

北师大初中英语八年级上--Unit3 12-1

[00:01.59]UNIT 3 [00:07.61]Lesson 12 [00:13.52]Exercise 1.2 [00:16.30]The Disappearing Sea [00:18.87]The Aral Sea is a large lake in Central Asia. [00:23.46]There are two large rivers [00:25.45]that give water to the lake. [00:27.98]Around 1960, farm

Some Elderly Koreans Uncertain About Separated Family Reunion

After World War II, many Korean families who were North or South of the line that divided the two countries were separated. The Korean War more than 60 years ago made meeting nearly impossible. And now some separated families in South Korea say they

SSS 2009-05-04

This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. Climate change is the great environmental challenge facing the world today, but maybe we should start calling it Climates Change. Because scientists who've

SSS 2010-02-04

Some people of Italian ancestry, like me, might have a surprise in the family treea man of east Asian descent, who was living and working 2,000 years ago in the boondocks near the heel of the Italian boot. The discovery is the first good evidence of

SSS 2011-07-05

This is Scientific Americans 60-Second Science. Im Karen Hopkin. This will just take a minute. If youve ever wondered where the Earth came from, the answer, it seems, is blowin in the windthe solar wind. Or so say scientists who, after examining sola

高中英语人教版高一下19

[00:05.09]Lesson 85 [00:08.75]1.Dialogue [00:12.59]David and Zhou Lan are talking about Britain. [00:17.55]Are you English? [00:20.82]No,I'm not. [00:24.66]But you speak English! [00:27.72]That's correct. [00:30.46]Where are you from then?Canada? [00

切尔诺贝利三十年后风险仍在

AS IT IS 2016-04-26 Chernobyl, Risky Still, Thirty Years Later 切尔诺贝利三十年后风险仍在 Tuesday marks the 30th anniversary of the Chernobyl disaster, the worlds worst nuclear accident. The effects of the disaster are still felt today.

美国国家公共电台 NPR Doctors Concerned About 'Irreparable Harm' To Separated Migrant Children

STEVE INSKEEP, HOST: The number of migrant children detained by the U.S. government alone is increasing. That's the result of a policy decision by the Trump administration to separate children from their parents as the parents are prosecuted for cros

TED演讲:树木之间如何交流(4)

The first day of the experiment, we got out to our plot 实验的第一天，我们来到了实验地点， and a grizzly bear and her cub chased us off. 突然一头灰熊和她的熊宝宝出现，把我们赶跑了。 And I had no bear spray. But

英语四级听力-短对话 218

Passage Two29. A. Cooking. B. Cleaning. C. Sink care. D. Painting. 30. A. 50%. B. 40%. C. 30%. C. 20%. 31. A. How to release oil from seeds. B. How to test the local market for oil. C. Food and oil. D. Soybean and oil. Passage TwoFrom the beginning o

经济学人150:向地底进军

Science and technology 科学技术 Going underground 向地底进军 A project to reveal more about all the carbon on Earth 旨在向人们揭示更多地球碳信息的项目 The Deep Carbon Observatory 深碳观测站 A world still full of secrets

经济学人110:地球上所有碳的秘密的项目

Technology Going underground 科技 去地球深处 A project to reveal more about all the carbon on Earth 一个将会揭示更多关于地球上所有碳的秘密的项目 THE carbon cycle is the stuff of school books. 碳的循环在学校教科书中

TED演讲:地球的年龄有多大(1)

How old is the Earth? 地球的年龄有多大？ Well, by counting the number of isotopes in a sample of rock that's undergone radioactive decay, 通过对岩石样品中正经历着放射衰变的同位素计数， geologists have estimated the Ear

万物简史 第221期:把铅撵出去(10)

But there were many technical difficulties to overcome. Holmes also neededor at least would very much have appreciatedsophisticated gadgetry of a sort that could make very fine measurements from tiny samples, and as we have seen it was all he could d

科学家在冰川中寻找历史线索

A group of scientists from the Ohio State University are trekking to the top of the Quelccaya Ice in the Peruvian Andes to try to measure the effects of climate change on the world's glaciers. The average distance above sea level on the glacier is ar

Study shows Moon younger than previous estimates

WASHINGTON, Aug. 17 (Xinhua) -- Latest research shows that the Moon could be younger than previous estimates. The findings were published online Wednesday in the Nature journal. The prevailing theory of the Moon's origin is that it was created by a g

万物简史 第290期:砰!(25)

As one commentator has put it, fleeing would mean selecting a slow death over a quick one. 有一位评论家说，逃跑意味着在慢死和快死之中选择慢死。 The death toll would be very little affected by any plausible relocation effort,