单词：porous alumina
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This is Scientific American 60-Second Science. I'm Cindey Graber. This will just take a minute. When TV sets die, they usually end up incinerated or in landfills. But now researchers from Englands University of York believe theyve found a valuable us
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This is Scientific Americans 60-Second Science. Im Sophie Bushwick. Got a Minute? What's the best way to find out if an unknown mixture contains a specific substance, like an environmental contaminant? You could use an expensive, bulky gas chromatogr
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Belgium-Germany Border Remains Porous 德国比利时边境虽加强边检但漏洞仍多 LIGE (BELGIUM) / AACHEN (GERMANY) One of the suspected gunmen in the Nov. 13 Paris attacks, Salah Abdeslam, evaded law enforcement, made his way to Belgium, and
VOA标准英语2015年(十一月)
1. 转译： 英语中常用介词来表达动作意义。汉译时，可将介词转译成动词。 （1）在作表语的介词短语中，介词常转译为动词，而连系动词则省略不译。如： This machine is out of repair. 这台机器失
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You are listening to this podcast on a computer, or perhaps you have downloaded it from a computer to an MP3 player. So I am sure that you know what the words hardware and software mean. Hardware means the computer itself and other machines which are
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