标签：安全官员警惕生物恐怖主义 相关文章

VOA标准英语--神经科学发现政治强腕的生物基础

Neuroscience Finds Biological Roots of Political Stubbornness Control of Congress is at stake in this November's U.S. midterm elections. In today's highly polarized political environment, Republican and Democratic partisans have staked their position

发表于:2018-12-01 / 阅读(94) / 评论(0) 分类 VOA标准英语2018年(九月)

VOA常速英语2018--千篇一律的城市草坪不利于生物多样性

Butterflies are as beautiful as the flowers they feed on. But they appear to be less abundant than in years past and that has scientists worried. Because butterflies, bees and other beneficial bugs pollinate plants and are crucial to as much as eight

发表于:2018-12-08 / 阅读(46) / 评论(0) 分类 VOA标准英语2018年(九月)

美国有线新闻 CNN 美炸弹包裹案被列为国内恐怖主义 警方正在寻找嫌犯指纹和DNA

Up and down America's eastern seaboard a manhunt is going on and that's our first story this Friday on CNN 10. The names of prominent Democrats, an actor and director and a former CIA director were written on packages that looked like they contained

发表于:2018-12-08 / 阅读(70) / 评论(0) 分类 CNN美国有线新闻2018年11月

TED公开课:重释机器 27 Robert Full:自然界最恶心生物的小秘密,运用到了机器人上

机器人要如何学会在崎岖地形上保持稳定，颠倒行走，在空中做出体操动作，以及撞墙却不伤及自身？罗伯特富尔展示了蟑螂身体的奇妙之处，以及它带给机器人工程师的启示。

发表于:2018-12-09 / 阅读(255) / 评论(0) 分类 TED公开课:重释机器

留美老师带你每日说英文 第114期:生物之美

台湾籍旅美老师今天交给我们的句子是： At the same time, I see much more about the flower than he sees. I could imagine the cells in there. The complicated actions, which also have a beauty. 同时，我也能比他更深入地看这朵

发表于:2018-12-25 / 阅读(45) / 评论(0) 分类 留美老师带你每日说英文

留美老师带你每日说英文 第83期:Life and spirit

台湾籍旅美老师今天交给我们的句子是： But I know every rock and tree and creature has a life, has a spirit, has a name 但是我知道每一块岩石、每一棵树、每一种生物都是有生命的，都是有灵魂的，也都是由

发表于:2018-12-25 / 阅读(49) / 评论(0) 分类 留美老师带你每日说英文

VOA慢速英语2012 Technology Report - 15,000 Websites That Spread Terror and Hate

Technology Report - 15,000 Websites That Spread Terror and Hate 科技报道 - 互联网恐怖主义和仇恨问题日益严重 This is the VOA Special English Technology Report. 这里是美国之音慢速英语科技报道。 Hate groups and terror

发表于:2019-01-02 / 阅读(61) / 评论(0) 分类 2012年VOA慢速英语(四)月

TED公开课:百字不如一数字 01 玛格丽特·威特海姆:珊瑚(和编织)的美丽数学

玛格丽特威特海姆领导的项目致力于利用编织技术由一位数学家发明来重现珊瑚礁的生物，在赞颂珊瑚礁惊艳之美的同时，也让人理解了珊瑚礁生物背后所蕴含的双曲线几何之美。

发表于:2019-01-05 / 阅读(122) / 评论(0) 分类 TED公开课:百字不如一数字

科学美国人60秒 SSS Species Split When Mountains Rise

Species Split When Mountains Rise生脉隆起导致生物多样化 The tropics are well known for their biodiversity. But another hotspot? Mountains. Like the Hengduan Mountains, in south-central China. 热带地区因为其生物多样性而为大家所

发表于:2019-01-20 / 阅读(86) / 评论(0) 分类 2017年Scientific American(四)月

英语听力文摘 English Digest 13、交配8-9个小时的生物

Don: All right, Yael, you're a moth. And mating for you is a big deal because it takes eight or nine hours. So the last thing you want is for some predator to interrupt you and your mate in the act. Yael: I'm guessing that's true not just for moths.

发表于:2019-01-26 / 阅读(54) / 评论(0) 分类 英语听力文摘 English Digest

英语听书《海底两万里》第16期 第2章 正与反(5)

Therefore, I wrote, after examining these different hypotheses one by one, we are forced, 我一个一个研究了各种不同的假设， every other supposition having been refuted, to accept the existence of an extremely powerful marine animal. 和所

发表于:2019-01-27 / 阅读(60) / 评论(0) 分类 《海底两万里》中英双语有声读物

VOA双语新闻 - 美促巴履行调查孟买恐袭合作承诺

U.S. Secretary of State Condoleezza Rice is urging Pakistan to follow through on its promise to cooperate with the investigation into the Mumbai terrorist attack. In a series of nationally broadcast interviews, Rice stressed the need for concrete act

发表于:2019-02-14 / 阅读(68) / 评论(0) 分类 VOA双语新闻 2008年12月

VOA双语新闻 - 美国北韩达成一致恢复执行核协议

The United States has reached an agreement with North Korea to resume implementation of the six-party accord to end that country's nuclear weapons program. The Bush administration said Saturday it is removing North Korea from its list of state sponso

发表于:2019-02-14 / 阅读(54) / 评论(0) 分类 VOA双语新闻 2008年10月

科学美国人60秒 SSS 生物多样性的信息随时间变化

Needed: Info on Biodiversity Change over Time We find that the composition of ecosystems around the world is changing much more rapidly than we expected. Indeed, much more rapidly than ecological theory predicts. 我们发现，世界各地生态系统

发表于:2019-02-14 / 阅读(64) / 评论(0) 分类 2018年科学美国人3月

科学美国人60秒 SSS 无人机的生物用途

Drones Could Help Biologists Tally Birds Ecologists crouching quietly amidst vegetation, using binoculars to tally birds in a roost, may soon be a charming relic of the past. Because a new study shows that, when it comes to getting an accurate avian

发表于:2019-02-14 / 阅读(74) / 评论(0) 分类 2018年科学美国人3月

英语听力文摘 English Digest 432、吃人的巨型生物

Anaconda 水蟒 Before Jennifer Lopez became J. Lo, she was an up and coming actress. Perhaps her worst movie was Anaconda , about a giant snake that terrorizes a documentary film crew in the Amazon rain forest. Hollywoods version of the snake was pu

发表于:2019-02-16 / 阅读(52) / 评论(0) 分类 英语听力文摘 English Digest

英语听力文摘 English Digest 247、呼吸甲烷

A Fresh Breath of Methane 很早很早以前地球有很微量的氧气，而且地表状况十分恶劣。大气主要是N2和Co2，后来通过复杂的变化，地球开始出现了厌氧型生物。在生命的作用下，地球的氧气开始不断

发表于:2019-03-09 / 阅读(115) / 评论(0) 分类 英语听力文摘 English Digest

英语听力文摘 English Digest 235、海洋死区

Dead Zones in the Ocean 所谓海洋死区是指由于海水富营养化日益严重，导致海水中含氧量减少，鱼类等生物无法生存的区域。科学家介绍，人类过量使用化肥、大量生活垃圾、车辆和工厂排放的废

发表于:2019-03-09 / 阅读(187) / 评论(0) 分类 英语听力文摘 English Digest

英语听力文摘 English Digest 239、外来物种入侵

Oceans Most Wanted 伴随着人们的经济活动和国际交往，一些物种由原生存地借助于人为作用或其他途径移居到另一个新的生存环境并在新的栖息地繁殖并建立稳定种群，这些物种被称为外来物种。

发表于:2019-03-09 / 阅读(206) / 评论(0) 分类 英语听力文摘 English Digest

VOA慢速英语2019 地球最早可移动生物追溯至21亿年前

Earths Earliest Mobile Organism Lived 2.1 Billion Years Ago Scientists have discovered the oldest fossil evidence of organism motility, or the ability of an organism to move independently. The discovery shows that development of motility began more t

发表于:2019-03-09 / 阅读(188) / 评论(0) 分类 2019年VOA慢速英语(二)月
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