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NASA Successfully Tests Hypersonic 1 Jet Three years after its first test flight ended in an explosion, NASA on March 27 successfully launched an experimental jet that the agency believes reached a re

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That's an unnatural act for a rocket. 这对于火箭来说，不是一种自然的行为。 The third stage has a camera. 第三次发射，火箭上有一个摄像机。 We call it rocketcam. 我们称之为火箭摄像机。 And it's pointed at th

TED演讲 第7期:从20马赫的滑翔机到蜂鸟无人机的感想(2)

40 years later, aero experts coined the term transonic. 40年后空气动力学专家创造了跨音速这个术语。 They debated, should it have one S or two? 他们争论这个术语应该用一个S，还是两个S? You see, they were having trou

科学美国人60秒 SSS Toll-Free Number Stems Human–Wildlife Conflicts

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Mother Machree There's a spot in my heart which no colleen may own; There's a depth in my soul never sounded or known; There's a place in my memory my life that you fill; No other can take it no one e

晨读英语美文60篇六级33

Mother Machree 慈母颂 Theres a spot in my heart which no colleen may own; Theres a depth in my soul never sounded or known; 在我心中有那么一隅， 任何少女也不能占据。 它埋在我灵魂的深处， 我从不声张从不表露。

CCTV9英语新闻：No more free grad school starting Fall 2014

China is reforming its graduate school education system this year to make it available to more students and more valuable in the increasingly competitive job market. But will these changes have their intended effect? My colleague Zhong Shi joins me i

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1. A scorching heat wave is engulfing the East Coast. The combination of heat and humidity pushed temperatures near triple digits in New York, Philadelphia, and Washington. Forecasters expect the record-breaking temperatures to continue through much

VOA慢速英语--四个年轻人致力于让世界更美好

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VOA慢速英语2014 Young Technology Expert Works to Stop Car Thefts

Young Technology Expert Works to Stop Car Thefts Kenya is East Africas largest economy. Its capital Nairobi is growing quickly. But so is the citys crime rate -- the Nairobi Metropolitan Crime Observatory says thieves steal an average of 10 cars each

美国国家公共电台 NPR Kenyan Bus Driver Speaks Out Against Everyday Corruption On Live TV

MICHEL MARTIN, HOST: It's no secret that corruption is widespread in Kenya. But recently, the conversation about it got real when a bus driver confronted the police and the president with a story of bribery on national television. NPR's Eyder Peralta

美国国家公共电台 NPR Playground Case Could Breach Barrier Between Tax Coffers, Religious Schools

STEVE INSKEEP, HOST: The United States Supreme Court is busy this week with a ninth justice, Neil Gorsuch, on the bench. Today, the court hears arguments in a Missouri case with the potential to open state coffers for aid to parochial schools. Like M

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2010年3月8日是三八妇女节，给自己的母亲或者女性朋友送上一首英语诗歌-《慈母颂》作为祝福，给她们一个意外的惊喜和慰问吧。为大家收集了几首 英语诗歌祝福语，祝福全天下的女性朋友们

飞行员英语900句 第2期:基本通话术语(2)

Expedite climb to FL190. 21.加速上升到高度190。 Climb to FL280 expedite until passing FL180. 22.上升到高度280，快速通过高度180。 Unable to expedite climb due weight. 23.由于重量原因不能加速上升。 Descending immediate

英语听力：自然百科 行星旅行指南：火星 Mars—8

Before we take this giant leap, we need to be able to carry everything needed for a three-year -round trip with us. This is a much larger effort than getting to the moon. Its the Apollo mission on steroids. At this point we know at least as much as t

公众人物毕业演讲第302期:亚马逊创始人贝佐斯普林斯顿大学毕业演讲

As a kid, I spent my summers with my grandparents on their ranch in Texas. 在我还是一个孩子的时候，我的夏天总是在德州祖父母的农场中度过。 I helped fix windmills, vaccinate cattle, and do other chores. 我帮忙修理风车

PBS高端访谈:为什么许多女兵的回归家庭生活之路如此艰难?

GWEN IFILL: After serving in Iraq and Afghanistan, many veterans face an uphill battle finding work in civilian life. There's been an increase in efforts to help ease their transition, but one segment of the veteran population is often overlooked. Sp

天朝威武：老外可羡慕咱们的手机了！为啥？

Americans get the best new handsets from Apple first. But in China, there are ways of living your life through a smartphone that left us jealous. China has even figured out a business model to legitimately stream the current season Game of Thrones on

万物简史 第245期:马斯特-马克的夸克(17)

At least the names for the two main possible culprits are entertaining: they are said to be either WIMPs (for Weakly Interacting Massive Particles, which is to say specks of invisible matter left over from the Big Bang) or MACHOs (for MAssive Compact

夏说英语新闻晨读 第86期:推特将转播美国橄榄球比赛

本期内容： TwitterwonabiddingbattleagainstanumberoftechfirmsvyingtobroadcastAmericanfootballgamesonline.TheNationalFootballLeague,whichrunstheprofessionalsport,wantstospreaditsinfluencebeyondcouch-basedtelevisionviewing.TwitterwillstreamtenThurs