单词：high-powered medium-speed diesel engines
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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. There's a huge, gunky brown cloud that lingers over south Asia and the Indian Ocean each winter. Its been known to cause respiratory diseases and even
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Narrator: Exercise 3.9. Lecture 3: Electric cars? Solar-powered buses? When most people imagine solutions to the problems of city air pollution they probably think of electricity and solar power. But the problem with an electric car is that the elect
202 Useful Exercises for IELTS
BEIJING, March 1 (Xinhuanet) -- A biotechnology(生物技术) company says it can produce diesel using the same ingredients(配制成分) that make grass grow, media reported on Monday. The Massachusetts company Joule Unlimited has created a genetica
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Bryan Wilson works to cut pollution from cookstoves, two-stroke engines, diesel Shelley Schlender | Fort Collins, Colorado 10 May 2010 Engineer Bryan Willson is developing cleaner-running, more energy-efficient products for people in the developing w
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The engines powering the Royal Navys cutting-edge fleet of Type 45 destroyers are unable to operate continuously in the warm waters of the Gulf, MPs were told on Tuesday. 周二，英国国会议员们被告知，英国皇家海军(Royal Navy)最先进
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The World Health Organization, upgrading a previous warning, said June 12 that diesel exhaust causes cancer and called for tighter emissions standards, comparing the risk of exhaust to second-hand cigarette smoke. Tuesdays announcement comes after in
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