VOA标准英语2015--夏威夷火山持续喷发 熔岩威胁附近居民区

Threat of Creeping Lava Has Hawaiians on Edge 夏威夷火山持续喷发 熔岩威胁附近居民区 PAHOA, HAWAII Hawaii's Kilauea, one of the most active volcanos on Earth, has been erupting for more than 30 years. But lava from a vent near Pahoa

VOA标准英语2009年-Astronomers Detect Most Distant Cosmic Obj

By Jessica Berman Washington 29 October 2009 Ultraviolet, X-Ray images of gamma-ray burst Astronomers have discovered evidence of the oldest and most distant cosmic event ever detected, a burst from a dying star that occurred 13 billion years ago, v

VOA标准英语2015--James Webb Space Telescope Progresses Toward Launch

James Webb Space Telescope Progresses Toward Launch WASHINGTON While the space community is looking back this week to celebrate the 25th anniversary of the launch of the Hubble Space Telescope, workers in an airtight cleanroom at Goddard Space Flight

英语听力：新概念英语第二册单词MP3 Lesson 071

accurate 准确的 all over the world 全世界 be connected with 与有联系 be immense size 外型巨大 be responsible for 对负责任 burn down 烧毁 check 检查 erect 建起 give time 报时 go wrong 出错 Greenwich 格林尼治 microphone 麦

美国有线新闻 CNN 开普勒望远镜进入紧急模式 BEAM太空舱运送至国际空间站

play pause stop mute unmute max volume 00:0002:40repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update your Flash plugin. Problems and progress in space. First, the setback for N

美国有线新闻 CNN 美国称菲律宾存在恐怖威胁 探秘菲律宾的独特火山

AZUZ: Three countries, including the United States, have warned people about traveling to part of the Philippines, a nation of thousands of volcanic islands located in Southeast Asia. The U.S. says it has credible information about a terrorist threat

2007年VOA标准英语-Plans for Kenyan Sugar Factory Spark Conservati

By Nick Wadhams Nairobi 25 September 2007 Plans for a sugar factory in Kenya's Tana River Delta have ignited a bitter dispute between conservation groups and economic officials. As Nick Wadhams reports from Nairobi, opponents argue development could

2007年VOA标准英语-Urban Glow Hides Stars, Disrupts Animal Life

By David McAlary Washington 22 February 2007 As populations and cities grow, our once pristine view of the stars is being whitewashed by urban glow. Astronomers, whose view of the heavens is being dimmed, are complaining, but biologists are also decr

美联社新闻一分钟 AP 美国称菲律宾存在恐怖威胁 探秘菲律宾的独特火山

AZUZ: Three countries, including the United States, have warned people about traveling to part of the Philippines, a nation of thousands of volcanic islands located in Southeast Asia. The U.S. says it has credible information about a terrorist threat

VOA标准英语2011--Hubble's Gaze Extends to Edges of Univer

Hubble's Gaze Extends to Edges of Universe Ever since the days of Galileo and the first optical telescopes more than 400 years ago, astronomers have been looking for ways to cast their gaze farther into the heavens around us. Today, thanks to the ear

VOA常速英语2014--计划进一步推迟使叙利亚化学武器销毁受挫

Further Delays Hit Syria Chemical Weapons Disarmament 计划进一步推迟使叙利亚化学武器销毁受挫 LONDON The operation to remove and destroy Syrias chemical weapons continues to be delayed by security problems and bad weather. Several c

美国国家公共电台 NPR In Southwest China, A 'Very Large Eyeball' Peers Into Deep Space

In Southwest China, A 'Very Large Eyeball' Peers Into Deep Space play pause stop mute unmute max volume 00:0004:17repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update your Flash

英语听力：自然百科 行星旅行：土星 Saturn—18

Breathing from a so-dubbed scuba unit and now fitted in a cross between a super ski suit and a haz-mat coverall, future Titannauts could explore with confidence. You just need that thermal protection and oxygen, and then you can play on the surface a

VOA常速英语2007年-Scientist in Texas Runs NASA's Lunar Laser Prog

By Paul Sisco Washington 14 November 2007 At the McDonald Observatory in western Texas, a unique space program has been quietly underway for more than 30 years. It is called the Lunar Laser Ranging Program. VOA's Paul Sisco has more. Research scienti

2006年VOA标准英语-Astronomers Detect Earliest Galaxies

By David McAlary Washington 14 September 2006 Astronomers have found that the universe began lighting up in its infancy. They have observed the most distant and oldest galaxies ever seen, small galaxies that helped lift the cosmos out of its dark ag

CCTV9英语新闻：中国克隆猪正产业化 每年产500头

By CCTV reporter Su Yuting Cloning is a controversial and decisive issue that has split public opinion regarding its potential benefits versus the ethical issues it raises. In recent years, scientists have been using the cloning of pigs for medical r

VOA常速英语2008年-Experts Say Climate Change Drives Migration in

By Nancy Palus Dakar 20 March 2008 The effects of climate change are increasingly driving people in sub-Saharan Africa to migrate in search of better living conditions, according to experts who gathered this week in the Senegalese capital, Dakar. Nan

VOA标准英语2008年-Scientists Discover Milky Way's Youngest Explod

By Cindy Saine Washington 14 May 2008 Scientists have announced the discovery of the youngest known exploding star, or supernova, in our Milky Way galaxy. Astronomers say the remnant of the most recent supernova could provide clues to a long-standing

英语听力文摘 English Digest 249、视差

Parallax 视差就是从有一定距离的两个点上观察同一个目标所产生的方向差异。从目标看两个点之间的夹角，叫做这两个点的视差，两点之间的距离称作基线。只要知道视差角度和基线长度，就