文档公开 苹果自动驾驶系统曝光!

Apple has been granted a permit to test self-driving cars by the California Department of Motor Vehicles but the company has never said anything about its plan. 苹果公司已经获得了加利福尼亚州车辆管理局允许其进行自动驾驶汽车

The New Age of Nuclear Power

The New Age of Nuclear Power By Spencer Reiss / Originally published in Wired . Get ready for the mass-produce, meltdown -proof future of nuclear energy 1 A team of Chinese scientists advising the Bei

SSS 2010-02-18

Welcome to the Science Talk, the weekly podcast of Scientific American posted on February 18th, 2010. I am Steve Mirsky. And you know what the hottest sport in the world is right now? Thanks to the Winter Olympics, it is, of course, curling. That's t

【英语时差8,16】势能

Potential energy in a crossbow When we think of the concept of energy, we often think of objects in motion: a car rolling down a hill or a jogger running up a hill. This kind of energy-in-motion, called kinetic energy, isnt the only kind of energy. A

奥巴马每周电视讲话：总统呼吁确保美国引领世界开拓新边疆（03）

And it's why, over the last eight years, we've modernized the government's approach to innovation for the 21st Century. 也因此,在过去的8年里,我们让政府在21世纪的创新方式上现代化。 We've jumpstarted a clean energy revolution

SSS 2011-09-09

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Common batteries are electrochemical cells. And they may get better thanks to living cells: the multicellular organism called brown algae. Lithium ion

未来家庭和办公室的样子

Microsoft has unveiled its vision of what the home and office of the future will look like - and there are giant screens everywhere. 微软展示了未来家庭和办公室的愿景，四处都是大屏幕。 The computer giant produced the concept v

VOA标准英语2009年-Watchdog Group Fears Global Oil Crisis

By Selah Hennessy London 20 October 2009 A global watchdog group says world oil supplies are running low and that may lead to food shortages and spiraling armed conflict. Britain-based Global Witness says governments are doing nothing to prepare for

2015年CRI ＂Reactor Relevant＂ Fusion, a Potential Game Changer in Energy Production

Fusion is how stars produce energy. It occurs when the nuclei of light atoms, such as hydrogen, are fused together under extreme pressure and heat. Tokamak Energy, from Oxfordshire, believes that the third version of their compact, spherical tokamak

原汁原味商务英语播客 第70课:考虑提议(下)

This is the second in a two-part Business English Pod series about an internal meeting to consider a proposal. 这是2节商务英语播客的第2节，将要学习到在内部会议中考虑提议。 As we saw in the last episode, this type of meeti

美国军队将参加约旦多国军事演习

WASHINGTON, May 19 (Xinhua) -- U.S. troops will take part in a multinational military exercise in Jordan next week in a bid to demonstrate the U.S. commitment to security and stability in the region, the Pentagon said Monday. About 6,000 U.S. troops,

How to Create Passion Anywhere and Anytime

How to Create Passion Anywhere and Anytime Remember Science class? Mr. Thatcher, sophomore year in high school, taught us about potential and kinetic energy. I was way more interested in Pam Miller, who sat perilously close to me. But on Mr Thatcher

中英双语新闻——130 If zombies invade...

Zombie apocalypses. Robot revolutions. These may seem like impossibilities, but many people prepare for these events on a daily basis. 僵尸启示录，机器人革命。这些听起来像是天方夜谭，但很多人日复一日地为这些事变时

别人家的马路：巴黎自行车将被允许闯红灯

Cyclists in Paris are to be allowed to ride through some red lights in a bid by the mayors office to get more people on their bikes. 在巴黎骑自行车的人将被允许闯一些红灯，市长办公室此举是为了鼓励更多的人骑自行车。

经济学人:货币的半衰期 (2)

To make the numbers easier to grasp, they have provided an alternative way to express them. 为了让大家更好理解这些数据，他们提供了另一种表述方式。 They calculate how long it would take for prices to double, if inflation per

女性单独外出的十大注意事项

1. Awareness 有自我保护意识 True self-defence begins long before any actual physical contact: awareness of yourself, your surroundings, and your potential attacker's likely strategies. 在遭受任何攻击前，就要早早地有真正的自卫

俄罗斯确认恐怖袭击导致空难

The head of Russia's Federal Security Service Alexander Bortnikov revealed that the plane crash was the result of a terrorist attack, and that explosives were used to orchestrate it. According to our experts, a homemade explosive device equivalent to

TED演讲 4D打印机的诞生(5)

So I know you're probably thinking, okay, that's cool, 我知道大家现在大概会想，好吧，看着挺酷的， but how do we use any of this stuff for the built environment? 但是我们怎么把它应用到生产环境里？ So I've started

英语听力文摘 English Digest 323、荡秋千的精彩

Swinging Physics: Potential And Kinetic Energy Working Together 动能与势能相互作用 动能是所有能看到的运动的能量，包括物体的，微粒的或质点集的运动等。 势能(Potential energy )是位置的函数，例如把一个

【英语时差8，16】荡秋千

Sit on a swing, let someone push you, and away you go. But what happens if the person who pushed you walks away, and you want to swing faster and higher. If you've ever been in the second grade, you know the solution to that. Just start pumping your