用Mp3背六级单词041

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What Is a 'Bomb Cyclone?'

This is Whats Trending Today When it comes to weather, it is hard to sound more frightening than to call a storm a bomb cyclone. 谈到天气，很难听到什么比炸弹旋风更可怕的了。 But that is how weather experts are describing a huge

无线电导航有声信标相关词汇-4

average brightness 平均亮度 average picture level 平均图象电平 averaging 求平均数 avionics 航空电子学 axial betatron oscilations 轴向电子感应加速岂荡 axial etch nonuniform

VOA双语新闻：8、不怕伤鸟：无扇叶涡轮风力发电机

不怕伤鸟：无扇叶涡轮风力发电机 Wind turbines are efficient sources of cheap energy but also a source of concern as their huge spinning blades frequently kill birds and bats. A new type of wind generator developed in Spain offers a crea

VOA慢速英语2014 Extreme Cold Freezes Much of United States

Extreme Cold Freezes Much of United States From VOA Learning English, this is In the News. A weather system known as a polar vortex brought dangerously cold weather to large parts of the United States this week. A polar vortex is a cold, thick low pr

Bladeless Wind Generator Safe for Birds

Bladeless Wind Generator Safe for Birds Wind turbines are tall structures with large blades used to produce electricity. They are useful sources of low-cost, renewable energy. But they can also be deadly to birds and bats. The turbines large blades t

VOA标准英语2015--新型风力发电机避免误伤鸟类

Bladeless Wind-Power Generator is Friendly to Birds 新型风力发电机避免误伤鸟类 Wind turbines are efficient sources of cheap energy but also a source of concern as their huge spinning blades frequently kill birds and bats. A new type of w

VOA常速英语2015--新型风力发电机不会伤及鸟类

新型风力发电机不会伤及鸟类 In 2002, Spanish inventor David Yanez saw a short film about the Tacoma Narrows Bridge in the U.S., collapsing in strong wind. 2002年西班牙发明家大卫亚尼斯看了一部关于强风造成美国塔科马

60秒科学:Maple Seed Flight Aerodynamics

What do a hummingbird, a moth, and a maple tree have in common? They all use a similar trick to fly. Okay, okay, a maple tree doesnt fly. But its seeds kind of do. Maples make those little whirlybird seeds you see spiraling down in droves each sprin

本周迎来有史以来最强冷空气

China's national observatory renewed its orange alert for cold wave- the second highest level - on Sunday evening. Sun jun, chief forecaster of the National Meteorological Center, says the strong cold front is linked with the activity of the polar vo

微电子辞典-5

Early effect 厄利效应 Early failure 早期失效 Effective mass 有效质量 Einstein relation(ship) 爱因斯坦关系 Electric Erase Programmable Read Only Memory(E2PROM) 一次性电可擦除只读

中国的寒冷天气会持续到下周

The mascot, Kangkang, debuted on Thursday. It's based on a colored ink prototype painted by well-known Chinese artist Han Meilin. The 80-year-old is the man behind the famous fuwa, the mascots for the Beijing Olympic Games in 2008. For the Spring Fes

2016年CRI Cold Weather to Continue into New Week

Temperatures in Beijing dropped to below minus-10 degrees Celsius on Friday. Forecasters are warning the temperatures are going to hit a 30-year low through this weekend. Yu Bo is the chief forecaster with the Beijing Municipal Meteorological Center.

2016年CRI Strongest Ever Cold Front to Ease Starting from This Week

China's national observatory renewed its orange alert for cold wave- the second highest level - on Sunday evening. Sun jun, chief forecaster of the National Meteorological Center, says the strong cold front is linked with the activity of the polar vo

科学美国人60秒 SSS 北极热浪与雪风暴有关

Arctic Heat Waves Linked to Snowpocalypse-Like Storms February was unusually hot in the arctic. Thawing out temperature: 35 degrees Fahrenheit.It made big news when it got to 35, I don't know if that's t-shirt weather yet, but 北极在二月时异常炎

立冬啦 关于冬天不可不知的3个单词

A polar vortex, also known as a circumpolar vortex, is a wind current that circulates above the North and South Poles. The currents sit like spinning hats above the Poles. 极地涡旋，又叫环极涡旋，是环绕在南极和北极上空的一股气

CCTV9英语新闻：我们记录的最低气温

Now let's get some of the science behind the cold. What is driving these temperatures and how long is it expected to last. We bring in meteorologist Alex Wilson of US' Weather Channel. As even talking about this unusual cold, something you've been he

VOA慢速英语2019--什么是极涡？

What Is the Polar Vortex? Record cold weather in the United States is forcing schools and businesses to close. The polar vortex, as it is called, has also canceled flights and suspended mail delivery. The temperature in Fargo, North Dakota, dropped t

美国国家公共电台 NPR Polar Vortex Causes Midwest States Of Emergency As Cold Pushes Farther South

STEVE INSKEEP, HOST: You know it's cold in Chicago when TV video shows the railroad tracks on fire. Steel rails contract in exceptional cold. So to warm them up, transit workers stretch rope soaked in kerosene along the tracks, and they burn it. The

面试中“逃跑”的六个理由

When a prospective employer makes unreasonable demands on you before things start to get serious, it's a strong signal to hit the road. 当一位未来雇主在工作还没正式之前就提出了无理要求，那么明显说明你需要跑路了。