除了染上花粉热我们很少有人会注意到花粉。可是显微镜下花粉却有着令人吃惊的颜色和形状--并能很好地传播。乔纳森 卓瑞给我们近距离的简要介绍了身负植物交配重任的迷人微粒。

发表于:2018-12-09 / 阅读(158) / 评论(0) 分类 TED公开课:生态谜云

The microscope. In their course of their professional work, scientists often take photos of microscopic objects. And often, the resulting images can be quite beautiful. For thirty years, Nikon, the camera company has held an annual competition to sel

发表于:2018-12-11 / 阅读(49) / 评论(0) 分类 万花筒2008年

也许你玩过纸卡娃娃,或者折过纸天鹅? TED 伙伴马努普拉卡什和他的团队发明了一种用纸做的显微镜,易折易用。他精彩的演说展示了,这项发明能如何为发展中国家的医疗状况带来革命性的

发表于:2018-12-18 / 阅读(119) / 评论(0) 分类 TED演讲集:2014创意的一年

At the city of Baku on the side of the Caspian Sea there are so many oil-wells and so much oil that it seems to get into everything. 在里海边的巴库城有很多很多油田,出产大量的石油,似乎什么东西都沾上了石油。 You s

发表于:2018-12-28 / 阅读(74) / 评论(0) 分类 美国学生世界地理教材

IN the north of Russia the ground is white with snow. 俄罗斯北部,土地白雪皑皑。 In the south of Russia the ground is blackalmost as black as coalbecause the soil is so rich, probably the richest in the World. 俄罗斯南部,土地是黑

发表于:2018-12-28 / 阅读(67) / 评论(0) 分类 美国学生世界地理教材

After hundreds of years, the most common, basic microscopes still operate by means of the same old hardware: the lens. But what if you could do away with that lens and create a microscope that fits on a cell phone? Thats what researchers led by Aydog

发表于:2019-01-02 / 阅读(64) / 评论(0) 分类 60秒科学

A dress which turns transparent when the wearer becomes aroused may soon be seen on the high street. The dress, called Intimacy 2.0, is made of smart fabrics which become clear when electrified by a quickening heartbeat. Award-winning Dutch designer

发表于:2019-01-08 / 阅读(67) / 评论(0) 分类 英语阅读理解

[全屏观看] 点击右键- 另存为 可保存这个Flash影片

发表于:2019-01-08 / 阅读(147) / 评论(0) 分类 英语小游戏

高清显微镜探索微型世界 Modern microelectronic devices contain billions of components crammed into thumbnail-size flakes. The chemical industry uses nanoparticles to make better cleaning products, while pharmaceutical companies use them for

发表于:2019-01-14 / 阅读(95) / 评论(0) 分类 VOA标准英语2016年(一月)

Last month, artist Aaron Chervenak drove from Los Angeles to Las Vegas, Nevada to finally take the love for his smartphone to the next level by marrying it at a small wedding chapel. And yeah, in case youre wondering, he even put a ring on it. 上个月

发表于:2019-02-01 / 阅读(183) / 评论(0) 分类 阅读空间

维拉德威根向大家讲述他如何在艰难孤独的童年生活中发现了自己的独特才能创造用肉眼无法看见的艺术作品。他的幻灯片展示了显微镜下他那些令人叹为观止的艺术作品。

发表于:2019-02-05 / 阅读(100) / 评论(0) 分类 TED公开课:艺术与幻觉

为了在未来十年内将道路交通死亡人数减少一半,欧盟最近提出了一系列道路安全行动计划,其中包括建议在公交车、出租车以及货车上安装功能类似飞机黑匣子的行驶数据记录器。这种汽车

发表于:2019-02-06 / 阅读(61) / 评论(0) 分类 阅读空间

One rural farmer found out exactly how much it would cost for his local Internet service provider to extend their network outside of the service area, and it was a pretty scary number. To be exact, Windstream Communications was going to charge Nelson

发表于:2019-02-06 / 阅读(82) / 评论(0) 分类 英语新闻

Most of us are used to seeing traffic lights above eye level. Whether we are driving, biking, or walking, traffic signals help us know when to stop and when it is safe to proceed. 我们多数人都习惯看和我们眼睛一个高度的红绿灯。无

发表于:2019-02-09 / 阅读(78) / 评论(0) 分类 阅读空间

Bacteria Bacteria are extremely small living things. While we measure our own sizes in inches or centimeters, bacterial size is measured in microns. One micron is a thousandth of a millimeter: a pinhead is about a millimeter across. Rod-shaped bacter

发表于:2019-02-17 / 阅读(88) / 评论(0) 分类 双语有声阅读

This tiny sensor mounted on a bumblebee is monitoring all kinds of important environmental data. This is the brainchild of a group of researchers at the University of Washington. What made us start the aim of this was our prior work on building insec

发表于:2019-02-18 / 阅读(66) / 评论(0) 分类 VOA标准英语2019年(一月)

Your friend is moving Saturday. Are you free to help? 你的朋友周六要搬家,你有空去帮忙吗? The real answer is yes. The honest answer is no, because you're a human being and not a forklift. And also because you guys aren't really tha

发表于:2019-02-18 / 阅读(100) / 评论(0) 分类 阅读空间

不说了,我忒忙,这是电影《夜店》里高警官的口头禅,身边,更多的白领们也将这句话挂在嘴边,不管是真忙还是假忙,彼此一见面,开口就叹最近特别忙。由此便催生了这样一个新的群族

发表于:2019-02-18 / 阅读(88) / 评论(0) 分类 实用英语

The Microscopic Technique Each advance in microscopic technique has provided scientists with new perspectives on the function of living organisms and the nature of matter itself. The invention of the visible light microscope late in the sixteenth cen

发表于:2019-02-25 / 阅读(86) / 评论(0) 分类 双语有声阅读

How could you say you know who I am? Do you ever wonder why I'm here? The thoughts play back in your head like a film that has been stick on repeat. Imagine that this picture of me is painted for you. A portrait is made to hold a moment and moments w

发表于:2019-02-26 / 阅读(80) / 评论(0) 分类 英文摇滚歌曲