CDC is afraid to fund firearms research. 疾控中心是害怕得到武器研究的经费资助。 David Hemenway, professor of health policy at the Harvard T.H. Chan School of Public Health. 大卫海明威是美国哈佛大学公共卫生学院卫生

发表于:2019-01-20 / 阅读(198) / 评论(0)

未知分类

科学美国人60秒 SSS 嗅觉——鲨鱼导航秘诀

Sharks Head Straight Home by Smell嗅觉鲨鱼导航秘诀 Some sea creatures can find their way through thousands of miles of seemingly featureless oceans. Even more impressive is the route that they take. 一些海洋生物能够在茫茫的大海中

发表于:2019-01-20 / 阅读(167) / 评论(0)

未知分类

科学美国人60秒 SSS “盖子”的神奇之处

LSD is one of the most potent hallucinogenic drugsactive at just around 100 microgramsa miniscule amount. That fact has fascinated pharmacologists for decades. Namely, how can it have such long-lasting effects12 hours or moreat such tiny doses? 麦角酸

发表于:2019-01-20 / 阅读(199) / 评论(0)

未知分类

科学美国人60秒 SSS 墨西哥湾“死区”对虾业的影响

Every spring, the Mississippi River dumps tens of thousands of tons of nutrient runoff into the Gulf of Mexico. Add temperature, current and wind to that pollution, and you have the Western Hemisphere's largest stretch of oxygen-poor watersa so-calle

发表于:2019-01-20 / 阅读(230) / 评论(0)

未知分类

科学美国人60秒 SSS 未来声带研发方向

Voice is generated by a complex and beautiful biological system, and this is a system that allows all of us to communicate messages, concepts, and emotions. 声音是由负责、美丽的器官系统产生的，该系统可以让我们交流信息、想

发表于:2019-01-20 / 阅读(211) / 评论(0)

未知分类

科学美国人60秒 SSS 吃零食须等价训练

Super Bowl Sunday is almost here and theres one question on everyones mind: How can I tackle a plate of chicken wings without adding yardage to my end zone? 超级碗星期天马上就要来临了，每一个人的心头都有这样一个问题：我怎

发表于:2019-01-20 / 阅读(187) / 评论(0)

未知分类

科学美国人60秒 SSS 香甜可口的咖啡

What's the liveliest part of your kitchen, in terms of harboring bacteria? Is it the cutting board? The dish sponge? Or maybe your coffeemaker? Because even though caffeine has antibacterial effects, it turns out espresso machines can harbor a whole

发表于:2019-01-20 / 阅读(173) / 评论(0)

未知分类

科学美国人60秒 SSS 降温层

You've probably seen pictures of Greek villages, where every house is painted bright white. The paint reflects the intense sunlight of the Mediterranean. And it works pretty well to keep the houses from heating up in the sun. But it doesn't actively

发表于:2019-01-20 / 阅读(191) / 评论(0)

未知分类

科学美国人60秒 SSS 宇航员的大脑变化

Time spent in zero G changes the body: Astronauts come home with bone loss and muscle weakness. But what happens in their heads? To find out, researchers examined MRIs of astronauts brains taken before and after flight. They looked at 12 astronauts w

发表于:2019-01-20 / 阅读(191) / 评论(0)

未知分类

科学美国人60秒 SSS 房地产市场繁荣破坏了鸟儿的情人节

Urban development is encroaching on forests in the Pacific Northwest. And its also ruining Valentines Day for some songbirds. Because urban growth is making it a challenge for some birds like the Pacific Wren to stay faithful to their partners, at le

发表于:2019-01-20 / 阅读(185) / 评论(0)

未知分类

科学美国人60秒 SSS Cool Coating Chills in Sunlight

发表于:2019-01-20 / 阅读(857) / 评论(0)

未知分类

科学美国人60秒 SSS 防晒霜加太阳伞才靠谱

Umbrellas Plus Sunscreen Best Bet to Beat Burns 防晒霜加太阳伞才靠谱 Last time you hit the beachand yeah, probably seems like a distant memory in the currently chilly parts of the worlddid you pack sunscreen? A beach umbrella? Or both? 上一

发表于:2019-01-20 / 阅读(180) / 评论(0)

未知分类

[科学美国人60秒] SSS 2015-10-13

If you are lost, you need a map and a compass. The map pinpoints where you are and the compass orients you in the right direction. Migratory birds, on the other hand, can traverseentire hemispheres and end up just a couple of miles from where they br

发表于:2019-01-20 / 阅读(207) / 评论(0)

未知分类

[科学美国人60秒] SSS 2015-10-12

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文，请发贴到听力原文收集区，您将会获得10到30积分的奖励! Thank you！

发表于:2019-01-20 / 阅读(172) / 评论(0)

未知分类

[科学美国人60秒] SSS 2015-10-09

Wilder protected areas get eight billion visitors a year, and that's just on land. Underwater reserves? add a million to the tally, which, considering these are protected areas, seems like an insane number of people. It isn't insane. Dane Blumstaine,

发表于:2019-01-20 / 阅读(215) / 评论(0)

未知分类

[科学美国人60秒] SSS 2015-10-08

发表于:2019-01-20 / 阅读(177) / 评论(0)

未知分类

【科学美国人60秒】SSS 2015-10-01

发表于:2019-01-20 / 阅读(183) / 评论(0)

未知分类

[科学美国人60秒] SSS 2015-10-05

发表于:2019-01-20 / 阅读(171) / 评论(0)

未知分类

[科学美国人60秒] SSS 2015-10-06

发表于:2019-01-20 / 阅读(168) / 评论(0)

未知分类

[科学美国人60秒] SSS 2015-10-07

发表于:2019-01-20 / 阅读(175) / 评论(0)

未知分类

最新学习文章

热门学习文章

热门标签

英语听力 VOA标准英语 VOA 英语歌曲口语听力提高听力材料听力教程英语学习 NPR 英语口语 VOA慢速英语美国国家电台儿童英语 VOA英语小学英语 cnn VOA常速英语标准英语英文歌曲听电影学英语英语单词英文电影慢速英语 CRI 美联社新闻美国有线新闻加州分级澳洲新闻流行歌曲常速英语 ABC新闻快递疯狂英语英语读物听力棚车少年经济学人英语词汇商务英语 VOA双语新闻 BBC 中国电台大学英语 Treasures 加州语文 BBC英语英语听力网站 VOA英语教学词汇万花筒 SSS VOA英语听力 AP 新概念分级英语英语广播听力精选英语播客英文绘本 TED演讲赖世雄英语MP3 CCTV9英语新闻 lesson 英语新闻初中英语学英语英语语法历史上的今天英文广播剧英语游戏原版英语小说英语有声读物书虫英语牛津英语读物访谈录新闻一分钟考研英语英语每日在线听新闻 Us 新概念英语地道英语单词第二册自然百科高中英语 sports 实用英语 MP3听力辛沛沛 ESL英语第一册英语每日一句 unit 新东方 GRE 每日一词 BBC听力

学英语单词

2-phenoxyethanol

ab aeterno

acutangulate

additional printed circuit

address tag

alice marble

aluminized-screen picture tube