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美国有线新闻 CNN 俄罗斯高超音速导弹发射成功美国防部长称俄新武器不影响美战略

And our first story concerns a weapon that said to be hypersonic, meaning it would travel at several times the speed of sound. Russia's defense ministry says it's conducted a successful test of a hypersonic missile. A nation might want to want a weap

发表于:2018-12-02 / 阅读(72) / 评论(0)

CNN美国有线新闻2018年4月

TED演讲第8期:从20马赫的滑翔机到蜂鸟无人机的感想(3)

That's an unnatural act for a rocket. 这对于火箭来说，不是一种自然的行为。 The third stage has a camera. 第三次发射，火箭上有一个摄像机。 We call it rocketcam. 我们称之为火箭摄像机。 And it's pointed at th

发表于:2018-12-18 / 阅读(23) / 评论(0)

TED演讲科技篇

美国国家公共电台 NPR Nations Rush Ahead With Hypersonic Weapons Amid Arms Race Fear

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

发表于:2019-01-17 / 阅读(45) / 评论(0)

2018年NPR美国国家公共电台10月

美国公司正在研发6倍音速飞机

Lockheed Martin says it's developing a Mach 6 aircraft that would be faster than any other fighter jet. 洛克希德马丁公司日前宣布，该公司正在研发一款速度可达6马赫、比其它所有飞机都快的战斗机。 Called the Hype

发表于:2019-02-06 / 阅读(172) / 评论(0)

英语新闻

Archaeologists hunt for Mona Lisa model

BEIJING, May 12 (Xinhuanet) -- Italian archaeologists(考古学家) are digging the remains of Lisa Gherardini, a 16th-century woman who is widely believed to be the model for the famous portrait Mona Lisa, AFP reported on Wednesday. The team of hist

发表于:2019-02-08 / 阅读(73) / 评论(0)

英语新闻

New Business Model Redefines Giving

An increasingly popular business model lets participating companies give to charity while making a profit. But the approach is blurring the lines between for-profit and not-for-profit organizations and raising questions about the real drivers behind

发表于:2019-02-19 / 阅读(113) / 评论(0)

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