单词:extratarsal
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AS IT IS 2014-06-02 Connected Cars on the Highway to the Future 高科技使汽车连接未来 Modern automobiles and their drivers are becoming connected through wireless technology to entertainment and information systems. VOA recently visited the
Solar-Powered Plane Completes Trip Around the World 最大太阳能飞机完成环球之旅 For the first time, a solar-powered airplane has completed a trip around the world. The Solar Impulse 2 landed in Abu Dhabi before sunrise on Tuesday, after a
This is Scientific American's 60-second Science. I'm Steve Mirsky. Heres a clip from last weeks CalTech commencement address by Secretary of Energy and physics Nobel Laureate Steven Chu. Most scientists are optimistic by nature. Part of my optimism c
Energy Secretary: We Need New Agriculture Revolution In his CalTech commencement address on June 12, Nobel physicist and Secretary of Energy Steven Chu called for a new agricultural revolution, led by scientists. Heres a clip from last weeks CalTech
Now Minneapolis-based inventor Rich Kronfield has created an electric-assist 'Raht Racer' velomobile that he claims can travel at up to 100mph (160km/h). 现在美国明尼阿波利斯的发明家里奇?科伦菲尔德研制了电动拉特赛车(Ra