单词:
单词: 相关文章
Spock is a main character in the popular TV show Star Trek. He is half Vulcan, half human. A Vulcan has no emotions but is extremely smart and logical. Spock joined the all-human crew of the spaceship Enterprise to explore the universe. Spocks dad, S
By Caty Weaver Broadcast: October 3, 2004 (THEME) VOICE ONE: I'm Faith Lapidus. VOICE TWO: And I'm Steve Ember with People in America in VOA Special English. Today we tell about the world's most famous doctor for children, Benjamin Spock. (THEME) VOI
Graphene Called Amazing, Versatile Material of the Future 前景光明的多功能材料石墨烯 In 2004, two scientists at the University of Manchester in England isolated a carbon-based material called graphene, with some unusual properties. Andre
Scientists Create Blackest Material Ever Of all the black things in the universe only the infamous black holes are so black that not even a tiny amount of light can bounce back. But scientists have managed to create material almost as black, and it h
Northern Central African Republic has large areas controlled by rebels, and road bandits, intercepting vehicles, harassing civilians, and sometimes kidnapping them for ransom or killing them. The undermanned military has little positive impact. Ther