直馏发动机燃料

SSS 2011-03-29

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? To keep your car purring, you have to change the oil. Such maintenance produces eight billion gallons of used motor oil annually. Some waste oil does get re-refined to pro

发表于:2018-12-24 / 阅读(72) / 评论(0)

Scientific American(三)月

VOA常速英语2008年-Rebel Northern Ivory Coast Towns Run Out of Gas

By Nancy Palus Dakar 28 March 2008 Several northern towns in rebel-held Ivory Coast have run out of gasoline in recent days. In some areas, street vendors are selling black market fuel at up to six times the normal price. Nancy Palus reports from VOA

发表于:2019-01-12 / 阅读(37) / 评论(0)

VOA标准英语2008年（三月）

VOA标准英语2010年-Fuel Industry Strike Threatens to Plun

Darren Taylor | Johannesburg 03 September 2010 Thousands of fuel and motor industry employees in South Africa have joined a national public service strike in the country, but many others continue to resist union calls for them to stay away from work.

发表于:2019-01-14 / 阅读(31) / 评论(0)

VOA标准英语2010年(九)月

经济学人316:发射飞机让电磁感应来验证

Science and technology 科学技术 Launching aircraft 发射飞机 Proof by induction 让电磁感应来验证 In the future, airliners could be catapulted into the sky by electric motors 将来，会用电动机将客机弹射到天空中 READERS o

发表于:2019-02-03 / 阅读(44) / 评论(0)

经济学人科技系列

Asking about Public and Business Areas 询问公共场所

G: Excuse me, but where's the toilet? 对不起，请问卫生间在哪里？ W: Go straight, then turn left. 一直向前走，然后向左拐。 BW: Good afternoon. Can I help you? 下午好！要帮忙吗？ G: Yes. Can you tell me where the clini

发表于:2019-02-06 / 阅读(79) / 评论(0)

实用英语

饭店英语 Asking about Public and Business Areas 询问公共

发表于:2019-02-06 / 阅读(88) / 评论(0)

实用英语

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a dream of red mansions

albylcellulose

American flying squirrel