[天] 地球自转角速度

国外媒体:世界末日距离我们还有多远?

世界末日距离我们还有多远？近期，法国的研究人们员对地球未来的环境状况有着不甚理想的预计和预测。 French researchers are predicting doom for Planet Earth. They believe neighboring planets could stray out of orbit and collide with the Earth billions of

发表于:2018-12-07 / 阅读(130) / 评论(0)

国外媒体新闻

万花筒 2009-06-14&06-15 地球将如何毁灭？

French researchers are predicting doom for Planet Earth. They believe neighboring planets could stray out of orbit and collide with the Earth billions of years from now. The BBC's David Shukman explains their theory. A view of Earth from orbit and a

发表于:2018-12-11 / 阅读(127) / 评论(0)

万花筒2009年

趣味青春英语第146期:On all fours

Idiom: On all fours 爬行，人说话的方式非常卑微 Hit the book: Backpack Astronaut Armrest Overstuffed Fingertip Rotational

发表于:2018-12-27 / 阅读(184) / 评论(0)

趣味青春英语

TED演讲:书呆子教你如何在线学习(9)

And lastly, here's Destin, from Smarter Every Day, 最后是《每天聪明一点点》的德斯丁， talking about the conservation of angular momentum, and, since it's YouTube, cats: 为我们讲述动量守恒，由于是在YouTube上，所以他用

发表于:2018-12-30 / 阅读(176) / 评论(0)

TED演讲科技篇

电信专业英英词典C-3

City Code - Some foreign countries require you to dial a city code before the phone number you are trying to reach. Clamp - A circuit that removes the energy dispersal signal component from the video

发表于:2019-01-03 / 阅读(153) / 评论(0)

电信英语

中国测试新型月球轨道飞行器

BEIJING, Aug. 10 (Xinhua) -- China is preparing for the launch of an experimental recoverable moon orbiter, said the State Administration of Science, Technology and Industry for National Defence on Sunday. The orbiter arrived in Xichang via air in so

发表于:2019-01-09 / 阅读(137) / 评论(0)

英语新闻

VOA慢速英语 2007 0306a

This is the VOA Special English Agriculture Report. To call something marginal means it is not very good. Farmers have their own way to define marginal land: It is the last to be planted under good conditions, and the first to be avoided under poor c

发表于:2019-01-11 / 阅读(179) / 评论(0)

VOA慢速英语2007年（三）月

VOA慢速英语 2007 1106a

AGRICULTURE REPORT - Farming Marginal Lands By Mario Ritter / Broadcast: Mon, 5 Nov 2007 16:00:00 UTC This is the VOA Special English Agriculture Report. An Australian farmer stands on land damaged by lack of rain last year To call land marginal mea

发表于:2019-01-11 / 阅读(326) / 评论(0)

VOA慢速英语2007年（十一）月

VOA慢速英语 2008 0115a

This is the VOA Special English Agriculture Report. Cattle graze in the western state of Oregon Grasslands need time to rest when cattle and other animals feed on them. Moving animals from one area of pasture to another can provide the time needed f

发表于:2019-01-11 / 阅读(139) / 评论(0)

VOA慢速英语2008年（一）月

英语听力：自然百科穿越银河系的旅行 Through Milky Way—21

Imagine the disc of our galaxy, if you just took a disc of stars and put it there, gravity would tend to make this disc collapse/ into itself and it would immediately just fall together. That is not what we see with the galaxy. Whats actually going o

发表于:2019-01-22 / 阅读(139) / 评论(0)

自然百科2011年

英语听力：探索发现 2014-05-30 BBC 地平线：陨石的真相-9

Itsremarkable how we are able to build up this picture of whats going on millionsof miles away in the solar system. Its one of the joys of science really, justalmost like a detective picking up on those tiny clues to tell a bigger story. Sothat the b

发表于:2019-01-23 / 阅读(153) / 评论(0)

探索与发现2014年

VOA慢速英语2010年-Agriculture Report - Giving Grasslands

This is the VOA Special English Agriculture Report. Grasslands need time to rest when cattle and other animals feed on them. Moving animals from one area of pasture to another can provide the time needed for new growth. This is called rotational graz

发表于:2019-01-31 / 阅读(154) / 评论(0)

2010年慢速英语(一)月

嫦娥5号探测器今年将带回月球土壤

China's unmanned lunar probe Chang'e-5, set to be launched around December 2017, will bring lunar soil samples back to Earth, says Wu Yanhua, deputy chief of the China National Space Administration. 国家航天局副局长吴艳华近日表示，我国

发表于:2019-02-07 / 阅读(105) / 评论(0)

英语新闻

嫦娥五号研制取得新突破计划今年11月底发射升空

China plans to launch the Chang'e-5 lunar probe at the end of November this year, from the Wenchang Space Launch Center in Hainan, aboard the heavy-lift carrier rocket Long March-5. 我国计划于今年11月底在海南文昌航天发射场用重型运

发表于:2019-02-08 / 阅读(127) / 评论(0)

英语新闻

北约决定加强在东欧的部署

BRUSSELS, Feb. 10 (Xinhua) -- NATO defense Ministers on Wednesday agreed to enhance military presence in eastern Europe at a ministerial meeting, NATO Secretary General Jens Stoltenberg said at a press conference following the first day's meeting. St

发表于:2019-02-13 / 阅读(141) / 评论(0)

英语新闻

万物简史第241期:马斯特-马克的夸克(13)

Hubble realized that this could be expressed with a simple equation, Ho = v/d (where Ho is the constant, v is the recessional velocity of a flying galaxy, andd its distance away from us). Ho has been known ever since as the Hubble constant and the wh

发表于:2019-02-17 / 阅读(116) / 评论(0)

万物简史

奥巴马:美国不试图遏制中国

奥巴马:美国不试图遏制中国 MANILA, April 28 (Xinhua) -- U.S. President Barack Obama said here on Monday that Washington was not trying to contain China when it signed a new military pact with the Philippines. The United States and the Phil

发表于:2019-02-17 / 阅读(139) / 评论(0)

英语新闻

U.S. military says no big troop buildup in Asia Pacific

WASHINGTON, June 7 (Xinhua) -- The United States is not shifting big number of troops into the Asia Pacific region, but will try and upgrade its engagement with limited means and foster allies' participation, said Joint Chiefs of Staff Chairman Marti

发表于:2019-02-18 / 阅读(140) / 评论(0)

英语新闻

万物简史第287期:砰!(22)

Chicxulub is buried under two to three kilometers of limestone and mostly offshore, 奇克休留布大坑在两三公里的灰岩深处，而且大部分在近海。 which makes it difficult to study, Anderson went on, while Manson is really quite ac

发表于:2019-02-25 / 阅读(126) / 评论(0)

万物简史

【英语时差8，16】地洞

Did you ever dream of digging a hole so deep it came out the other side of the earth? Let's play that game again, using a little physics. First we have to imagine that our tunnel is lined with super-heat-resistant material so we can pass through laye

发表于:2019-03-06 / 阅读(207) / 评论(0)

英语时差8，16

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