单词：Hu Yaobang
单词：Hu Yaobang 相关文章
AS IT IS 2015-07-15 US Spacecraft Flies by Pluto After Nine-Year Trip It has taken more than nine years for an American spacecraft to reach the far edge of our solar system. The spacecraft, named New Horizons, sailed past the dwarf planet Pluto on Tu
2015年VOA慢速英语(七)月
By David McAlary Washington 01 February 2006 Claims that our solar system has a 10th planet beyond Pluto are supported by a new finding by German and French astronomers. They calculate that it is bigg
2006年VOA标准英语（二月）
As for Pluto itself, nobody is quite sure how big it is, or what it is made of, what kind of atmosphere it has, or even what it really is. A lot of astronomers believe it isn't a planet at all, but merely the largest object so far found in a zone of
万物简史
THIS IS AMERICA - Naval Observatory in Washington By Jill Moss Broadcast: September 23, 2002 VOICE ONE: The United States Naval Observatory performs an important scientific duty for the United States,
This is America
By Paul Sisco 07 December 2007 The Mount Washington observatory in (the northeastern U.S. state of) New Hampshire is a non-profit, scientific and educational institution with a mission to advance understanding of the Earth's climate systems. It also
VOA常速英语2007年（十二月）
By Mike O'Sullivan Los Angeles 05 December 2006 Visitors to Hollywood often hope to catch a glimpse of the stars on the silver screen. Now, they can also get a peek at the stars in the sky at the Griffith Observatory, a longtime Hollywood landmark.
2006年VOA标准英语（十二月）