[通信] 涡式远程通信访问法

LESSoN EIGHT TEXT Telecommunication via Satellite At the beginning of the twentieth century, there were four powerful means of transmitting and receiving information over long distances: print, photog

发表于:2018-12-01 / 阅读(275) / 评论(0) 分类 自考英语(一)78讲

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

发表于:2018-12-08 / 阅读(495) / 评论(0) 分类 2018年VOA慢速英语(一)月

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

发表于:2018-12-19 / 阅读(140) / 评论(0) 分类 VOA双语新闻 2015年6月

World Telecommunication Day (WTD) celebrates the advances we have made in how we communicate with each other. It is on May 17 each year because that is the day in 1865 when the International Telegraph Union (ITU) started. The ITU manages how the worl

发表于:2018-12-29 / 阅读(151) / 评论(0) 分类 英语课程学习计划和讲义

Internet Use Expanding in Least Developed Countries It can be difficult to live in the 21st century without using the internet, a smartphone or other digital device. 身处21世纪,如果不使用互联网、智能手机或其它数字设备,你可

发表于:2019-01-03 / 阅读(129) / 评论(0) 分类 2018年VOA慢速英语(二)月

Internet Use Expanding in Least Developed Countries It can be difficult to live in the 21st century without using the internet, a smartphone or other digital device. 在21世纪,如果不使用互联网、智能手机或其它数字设备,可能会

发表于:2019-01-03 / 阅读(142) / 评论(0) 分类 2018年VOA慢速英语(二)月

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

发表于:2019-01-12 / 阅读(166) / 评论(0) 分类 2014年VOA慢速英语(一)月

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

发表于:2019-01-12 / 阅读(253) / 评论(0) 分类 2015年VOA慢速英语(七)月

By Margaret Besheer New York 19 September 2007 A new U.N.-sponsored initiative is being launched to bridge the digital divide and connect African countries with each other and the rest of the world. VOA's Margaret Besheer reports from U.N. headquarte

发表于:2019-01-26 / 阅读(208) / 评论(0) 分类 2007年VOA标准英语(九月)

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

发表于:2019-01-30 / 阅读(307) / 评论(0) 分类 60秒科学

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

发表于:2019-02-02 / 阅读(156) / 评论(0) 分类 英语新闻

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

发表于:2019-02-05 / 阅读(172) / 评论(0) 分类 英语新闻

XICHANG, May 27 (Xinhua) -- China successfully sent a telecommunication satellite, ChinaSat 2A, into orbit on Saturday evening, using a Long March-3B carrier rocket launched from the southwestern Xichang Satellite Launch Center. The rocket blasted of

发表于:2019-02-11 / 阅读(238) / 评论(0) 分类 英语新闻

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.

发表于:2019-02-14 / 阅读(225) / 评论(0) 分类 2016CRI中国国际广播电台

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

发表于:2019-02-14 / 阅读(173) / 评论(0) 分类 2016CRI中国国际广播电台

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

发表于:2019-02-14 / 阅读(152) / 评论(0) 分类 2018年科学美国人3月

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

发表于:2019-02-16 / 阅读(177) / 评论(0) 分类 英语新闻

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

发表于:2019-02-18 / 阅读(214) / 评论(0) 分类 CCTV9英语新闻2014年01月

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

发表于:2019-02-18 / 阅读(159) / 评论(0) 分类 2019年VOA慢速英语(二)月

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。

发表于:2019-02-21 / 阅读(256) / 评论(0) 分类 实用英语
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