当很快地说this shield或horseshoe时,this或horse词尾的齿龈音[],受后面shield或shoe词头的硬颚音[]的影响,也变为[]了。因而就念成了[][]。 1. []之后跟[]或[ ]时,[]常被同化成[];[][]。如: this ship[ ][ ] 2. []之后跟[ ]或[]时,常被同化成[];如: Has she co

发表于:2018-11-28 / 阅读(152) / 评论(0) 分类 李阳美语发音秘诀

STEVE INSKEEP, HOST: Every day, Americans send information to the cloud. That smartphone in your hand, or in the hand of the person next to you, is uploading photos and messages and all sorts of information. It's not literally in a cloud, but in a da

发表于:2018-12-02 / 阅读(131) / 评论(0) 分类 2018年NPR美国国家公共电台2月

诸多线索综合起来为我们描绘出一幅画面:那是火星遥远的过去,那时的火星还有着一层厚厚的大气层,令这颗星球温热暖和,从而使水能够在火星表面流淌。但如今,地表的水消失不见,而

发表于:2018-12-07 / 阅读(113) / 评论(0) 分类 60秒科学

96 希拉克与普京就美国导弹防御体系进行讨论 Chirac, Putin Discuss US Missile Defense Rebecca Santana Moscow 3 Jul 2001 02:23 UTC French President Jacques Chirac has met with Russian P

发表于:2018-12-08 / 阅读(93) / 评论(0) 分类 VOA2001-国际风云(2)

Some Assembly Required: New Space Telescope Will Take Shape After Launch play pause stop mute unmute max volume 00:0003:13repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update yo

发表于:2018-12-17 / 阅读(84) / 评论(0) 分类 2016年NPR美国国家公共电台11月

automate自动化 carton纸箱 detergent去污剂 hardware硬件 harness利用 granary粮仓 junction交叉点 lever杠杆,工具 platform平台 portable便携 register注册 shield遮护 symbolize象征 tissue纸巾,组织 towel毛巾 ultraviole

发表于:2018-12-30 / 阅读(133) / 评论(0) 分类 80天攻克雅思核心词汇

By Paul Sisco Washington, DC 11 July 2006 watch Shuttle report With most of its major tasks complete, including an investigation of the protective foam shield, the crew on board Discovery is cleared to return to Earth Monday. Yet, there's still plen

发表于:2019-01-04 / 阅读(155) / 评论(0) 分类 2006年VOA标准英语(七月)

By Carol Pearson Washington 03 May 2007 A scene of video game violence It is no secret that video games and television programs often depict graphic violence. But now, three new studies show violence causes children, teenagers and young adults to be

发表于:2019-01-06 / 阅读(114) / 评论(0) 分类 2007年VOA标准英语(五月)

The woman accused of kidnapping a week-old baby is now charged with kidnapping and assaults. Shannon Torrez also known as Shannon Beck, is being held on one million dollars bond. Police say she kidnap

发表于:2019-01-08 / 阅读(139) / 评论(0) 分类 美联社新闻一分钟2006

VOICE ONE: This is Steve Ember. VOICE TWO: And this is Shirley Griffith with the VOA Special English program EXPLORATIONS. Today we finish the story of the first American program to send a person into space. It was called Project Mercury. (MUSIC) VO

发表于:2019-01-11 / 阅读(83) / 评论(0) 分类 VOA慢速英语2009年(六)月

EXPLORATIONS - Project Mercury: Alan Shepard Becomes the First American in Space STEVE EMBER: This is Steve Ember. SHIRLEY GRIFFITH: And this is Shirley Griffith with the VOA Special English program EXPLORATIONS. Today we finish the story of the firs

发表于:2019-01-12 / 阅读(106) / 评论(0) 分类 2012年VOA慢速英语(八)月

By Hilary Heuler Warsaw 22 October 2009 As Vice President Joe Biden tours Central Europe this week, missile defense is high on the agenda. In Poland on Wednesday, Biden secured an agreement to host U.S. antiballistic missiles after original plans fo

发表于:2019-01-14 / 阅读(81) / 评论(0) 分类 VOA标准英语2009年(十月)

By Hilary Heuler Warsaw 21 October 2009 Vice President Joe Biden visited Poland and received assurances from Polish Prime Minister Donald Tusk that Poland will take part in a new missile defense plan. Polish officials said they would host elements o

发表于:2019-01-14 / 阅读(79) / 评论(0) 分类 VOA标准英语2009年(十月)

RACHEL MARTIN, HOST: This next story suggests how hard it can be to avoid racial discrimination. The story comes from a new survey of Americans of all races and ethnicities. It's being released this morning by NPR, the Robert Wood Johnson Foundation,

发表于:2019-01-16 / 阅读(73) / 评论(0) 分类 2017年NPR美国国家公共电台10月

You eliminate the stress involved with applying other screen shields on the market with wet or dry application. PureTek is fast and easy with just three short steps. Free your mind of dings and scratches. Premiumquality, great A screen shieldmaterial

发表于:2019-01-18 / 阅读(94) / 评论(0) 分类 英语新闻视频

The solar system is a hostile place. Earth is under attack from deadly cosmic radiation. Life here is only possible, because it's protected by the magnetosphere, an invisible force field that cocoons the planet. But new evidence reveals that this vit

发表于:2019-01-22 / 阅读(93) / 评论(0) 分类 自然百科2011年

It's clear from the fact that the Martian crust is strongly magnetized, that there must have been a magnetic field on Mars in the past, that the only way we know to magnetize rocks is for them to form in the presence of magnetic field. Why did Mars l

发表于:2019-01-22 / 阅读(90) / 评论(0) 分类 自然百科2011年

U.S. President Barack Obama said halting the nuclear weapons threat from Iran would reduce the need for a planned missile defense shield in Eastern Europe. But Mr. Obama denied he has told Russia he will rethink the missile shield program if Moscow

发表于:2019-02-05 / 阅读(102) / 评论(0) 分类 VOA标准英语2009年(三月)

Russia strongly opposes the U.S. plan to station a missile defense system in Eastern Europe. That issue will be discussed during the upcoming summit meeting in Moscow between U.S. President Barack Obama and his Russian counterpart Dmitri Medvedev. F

发表于:2019-02-12 / 阅读(106) / 评论(0) 分类 VOA标准英语2009年(七月)

South Korea is taking the lead in creating a prospective pool of money with its cash-rich neighbors to prevent the worst effects of the American economic situation from spilling over in the region. Meanwhile, top financial officials are telling Sout

发表于:2019-02-17 / 阅读(106) / 评论(0) 分类 VOA标准英语2008年(十月)