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841 、 埋头铆钉 countersinkheadrivet 842 、 埋头锥孔 countersink 843 、 埋头螺栓 countersinkheadbolt 844 、 埋头螺丝 countersinkheadscrew 845 、 埋头钻 countersinkdrill 846 、
英文名句短语
This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? Why do some chords sound sweet but others make you wince? Well it appears our earsor at least the ears of 250 Minnesota undergradsprefer chords containing harm
Scientific American(五)月
Russia Re-Industrializes as Energy Boom Fades Post Soviet Russia is widely seen as an industrial rust belt. But here, in a new car making hub outside St. Petersburg, American car maker GM is investing to triple its production capacity. Romuald Rytwin
VOA标准英语2013年(三月)
By Bill Gasperini Moscow 10 June 2006 Group of Eight finance ministers meeting in Russia say world economic growth continues, but they warned it is threatened by soaring costs for oil and gas. The ministers met in Russia's second city of St. Petersb
2006年VOA标准英语（六月）
LOS ANGELES, May 30 (Xinhua) -- The American Academy of Pediatrics (AAP) warned on Monday that children should keep away from energy drinks which may be dangerous for minors. The AAP urged young children and teens to avoid energy drinks entirely, say
英语新闻
DUBAI, Dec. 22 (Xinhua) -- The Abu Dhabi-based International Renewable Energy Agency (IRENA) said Saturday the six GCC countries' returns through renewable energy integration could hit 200 billion U.S. dollars by 2030. IRENA said in an e-mailed repor
英语新闻