单词：genus Crocodilus
单词：genus Crocodilus 相关文章
This is Scientific American's 60-Second Science. I'm Steve Mursky. Got a minute? Orbiting around stars far far away is sand. Astronomers have found sandy particles circling a pair of stars about 2,400 light years from us. And they think they might be
Scientific American(三)月
Dad: What are you working on, honey? Mariko: Its a project for school about the Earth and its place in the universe. I have to write a report and build a model of what scientists can see with a telescope in space. Dad: I can help you with that. I was
地道美语播客
By David McAlary Washington 12 January 2006 As astronomers detect more and more planets outside our solar system, they are finding that many of them have more than one sun, unlike Earth and its compan
2006年VOA标准英语（一月）
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
2006年VOA标准英语（九月）
By David McAlary Washington 05 April 2006 New evidence from an orbiting U.S. telescope indicates that planets might rise up out of a dead star's ashes. This is the first time scientists have detected
2006年VOA标准英语（四月）
An astronomer used to walk out every night to gaze upon the stars．It happened one night that，as he was wandering in the outskirts of the city，with his whole thoughts rapt up in the skies，he fell into a well．On his holloaing and calling out，
趣味英语