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The drive to develop a battery to power automobiles, without using petroleum, is also behind the effort to develop an electric powered airplane. New designs for electric aircraft were recently unveiled at the Experimental Aircraft Association's (EAA)
VOA标准英语2010年(八)月
AUDIE CORNISH, HOST: Think about some of the things that spew nasty contaminants into the air - automobiles, power plants. How about leaf blowers? Those annoyingly loud, gas-powered, backpack-like machines are about to pass cars as the worst air poll
2017年NPR美国国家公共电台3月
Innovative Electric Aircraft Win Green Flight Challenge We often hear about hybrid cars, which run in part on electricity and can travel about 20 kilometers on a liter of fuel. Engineers are also experimenting with another mode of electric transporta
VOA标准英语2011年(十月)
equipment是不可数名词，作装备，设备解。不能说equipments或an equipment。 例如：The building is supplied with modern office equipment. 这幢楼配备了现代化的办公设备。 You will be satisfied with the kitchen equipment
英文语法词汇
BEIJING, March 29 (Xinhua) -- China is conducting scientific testing and training exercises for its aircraft carrier, Defense Ministry spokesman Yang Yujun said Thursday. It takes time for weapons and equipment to be developed from scientific researc
英语新闻
China's first domestically-built aircraft carrier has set out from a port in Liaoning on its maiden voyage to start sea trials. The 50,000-ton vessel, codenamed Type 001A, is the second aircraft carrier launched by China. It follows the carrier Liaon
2018CRI中国国际广播电台