标签：friction 相关文章
But the friction and heat wears away at the space rock, the hot air actually melts the metal surface, and often the collision with the atmosphere can have a shattering effect, splitting the meteorites along fissures. This is an actual meteorite, and
探索与发现2014年
San Francisco Musicians Create 'New' Classical Music 旧金山音乐家为古典音乐翻新 California has long been seen as the place in the U.S. where new ideas are tested. A group of young artists in San Francisco are continuing that trend, givin
VOA常速英语2013年(十二月)
1. Criticism is mounting over the White House with prisoner exchange with the Taliban for captured army sergeant Bowe Bergdahl. Republicans are arguing the swap could harm National Security and encourage more abductions. Five Guantanamo detainees wer
美联社新闻一分钟2014(六)月
By Andre de Nesnera Washington 20 July 2006 Experts say very little was accomplished at the just completed G-8 summit bringing together leaders of the world's major industrialized democracies. In this report from Washington, The summit was overtaken
2006年VOA标准英语（七月）
Turkish Prime Minister Recep Tayyip Erdogan, right, and Massoud Barzani, president of the semi-autonomous Iraqi Kurdish region, during a meeting in Ankara, Turkey, 03 Jun 2010 Turkish military forces crossed into Northern Iraq this week in pursuit of
VOA标准英语2010年(六)月
By Kurt Achin Seoul 22 October 2009 A leading North Korea researcher and adviser to South Korea's president says the North is experiencing some friction at the very top of the ruling Kim family. The North's leader may have temporarily halted a succe
VOA标准英语2009年(十月)
New Skateboard Defies Gravity WASHINGTON A futuristic dream only a couple of decades ago, the hoverboard a skateboard that floats above the ground - has finally been made possible. While still not ready for mass production, it promises to become a co
VOA标准英语2014年(十一月)
全球股市开门黑引发一片哀嚎 中国经济放缓无碍美国经济 On Wall Street-it was a disappointing start for a brand new new year:a global sell-off sparked by a seven percent decline in Chinese stocks one large enough to trigger a so-
VOA标准英语2016年(二月)
STEVE INSKEEP, HOST: President Trump's national security adviser, John Bolton, is in Moscow for a second day today. He's there to discuss President Trump's pledge to withdraw from an arms control treaty that bans certain kinds of missiles. This is on
2018年NPR美国国家公共电台10月
Scott and his final team of five arrived at the South Pole in 1912 January to find they had been beaten to it by a Norwegian team led by Roald Amundsen, 1912年一月，斯科特和他的五人小分队 到达了南极点。但不巧，他们发现由挪
TED演讲娱乐篇
Scott and his final team of five arrived at the South Pole in 1912 January to find they had been beaten to it by a Norwegian team led by Roald Amundsen, 1912年一月，斯科特和他的五人小分队 到达了南极点。但不巧，他们发现由挪
TED演讲娱乐篇
China will further open up its financial markets for foreign investors, by implementing several specific measures to ease and lift its investment restrictions on foreign companies. Vice Finance Minister Zhu Guangyao announced the decision on Friday,
2017CRI中国国际广播电台
368. Progress of Invention. 368．发明方面的进展 The electric telegraph was now in common use. 此时电报已经投入日常使用， It enabled the newspapers to tell the people what was going on as they never had done before. 它使得报纸可
美国学生历史
The One With Ross's Wedding 本集简介： Ross, Monica, Joey, and Chandler leave for London; Phoebe's pregancy prohibits travel and Rachel stays to take care of her... and to avoid the emotional strain of watching Ross get married. Joey and Chandler
老友记(六人行)
U.S. Defense Secretary Robert Gates says Iraqi Arab and Kurdish leaders have made progress in recent weeks toward resolving their differences over power sharing and the status of the city of Kirkuk. Gates met Friday with Iraqi Prime Minister Nouri al
VOA标准英语2009年(十二月)
Experts say deepening cooperation between China and the United States not only meets the needs of the people of the two countries, but also that of globalization. The comments come as Hundreds of economists, entrepreneurs and investors gathered at th
2018CRI中国国际广播电台
Dmitri Medvedev, 42, officially becomes president of Russia on May 7. He will succeed Vladimir Putin, who has led the country for eight years. But Mr. Putin will not leave the political scene - Mr. Medvedev has promised to name him prime minister. 42岁
VOA双语新闻 2008年3月
The head of the World Intellectual Property Organization and leading experts from U.S. and European universities are urging the U.S. and China to solve trade disputes under multilateral frameworks like the World Trade Organization, saying that everyb
2018CRI中国国际广播电台
Observers are suggesting that China and Germany should find new ways to enhance trade and economic cooperation. One of the main features of the current Sino-German economic and trade cooperation is technology exchanges, as Germany is a world leader i
2018CRI中国国际广播电台
US tech industry insiders are expressing their disappointment on the recent moves by the Trump administration to restrain market access for Chinese tech companies in the country. Meanwhile, multilateral organizations such as the International Monetar
2018CRI中国国际广播电台