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A lot of us would love to go to work by bicycle. There are lots of reasons to switch. Its good for the planet. Its certainly healthier. And who really enjoys sitting in traffic? On the other hand, its no fun starting out your workday all sweaty and t
AS IT IS 2016-08-04 Ugandan Company Demonstrates Solar-Powered Bus 乌干达演示太阳能汽车 A bus powered by the suns energy has made its public debut. Kiira Motors Corporation demonstrated the new electric bus recently at a sports center in th
Robots as Fast as Cheetahs? 机器人像猎豹一样快吗? Scientists have been experimenting with four-legged robots for years. They want the ability to use robots like pack animals to carry heavy loads over difficult areas of land. But providing e
备用电机或能挽救飞行员的生命 More than 550 people are killed each year,on average,in accidents involving small,mostly single-engine airplanes,according to the U.S. Department of Transportation. 美国运输部的调查显示每年有超过
Backup Motor May Save Pilots Lives 备用电机或可挽救飞行员的生命 In case of engine failure, multi-engine aircraft often have enough power to land safely, but single-engine planes have a very small chance of avoiding a fatal crash. Now, t