单词:state graph model
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It started with a simple experiment: take some graphite - the black stuff in the middle of a pencil - and put a piece of tape over it. When the scientists at the University of Manchester did that, they found that they could develop a material that co
California Attracts Cars of the Future The hills on the west side of Los Angeles are the perfect place for Scott Painter to experience his passion for cars, especially if they are fast and cutting edge. I've had pretty much all the electric vehicles
Kerry: Tunisia's New Constitution is Model for Arab World 克里表示突尼斯新宪法是阿拉伯世界楷模 TUNIS U.S. Secretary of State John Kerry says Tunisia's new constitution is a model for political reform in the Arab world. Kerry made an
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
STEVE INSKEEP, HOST: Not for 20 years has there been a Democratic governor in Nevada. It's an increasingly blue state in presidential elections. The governor's office has stayed red, but this year, Republicans face a challenge, as NPR's Leila Fadel r
RACHEL MARTIN, HOST: President Trump meets China's leader, Xi Jinping, at the G-20 summit in Argentina tomorrow. The two will, obviously, have a lot to discuss - in particular, the trade war that doesn't seem to have an end in sight. As NPR's Rob Sch