2014-02-22 World Digital Library Reaches 9,900 Items
Hello and welcome to As It Is, from VOA Learning English! I’m Steve Ember in Washington. The American space agency NASA launched its first Voyager spacecraft in 1977. Scientists announced…
VOA英语教学网 - VOA LEARNING ENGLISH
一个让你免费在线学习VOA英语的好地方! 无须报名, 不收学费, 全年无休, 保证提高! (^_^)
Hello and welcome to As It Is, from VOA Learning English! I’m Steve Ember in Washington. The American space agency NASA launched its first Voyager spacecraft in 1977. Scientists announced…