标签：Discover 相关文章
By Jessica Berman Washington 22 February 2006 U.S. astronomers have discovered two moons orbiting Pluto, an icy planet smaller than our moon. Scientists found the moons while surveying the sky as part
发表于:2019-01-13 / 阅读(124) / 评论(0)
2006年VOA标准英语（二月）
2006年VOA标准英语（二月）
By Jessica Berman Washington 12 April 2006 An international team of anthropologists has discovered fossils in eastern Ethiopia that they say may be a missing link between our earliest and more modern
发表于:2019-02-04 / 阅读(132) / 评论(0)
2006年VOA标准英语（四月）
2006年VOA标准英语（四月）