单词:sodium hydrogen arsenate
[化] 砷酸氢二钠
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Broadcast: February 14, 2003 By George Grow This is the VOA Special English Environment Report. President Bush has offered a plan to speed development of technology that uses hydrogen as fuel. His goa
发表于:2018-12-07 / 阅读(74) / 评论(0)
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Salt is believed to be the single most harmful thing in our food, contributing to high blood pressure For years doctors have been telling patients with high blood pressure to cut down on the amount of salt in their diet. Now a prestigious panel of ex
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VOA标准英语2010年(四)月
Oxygen itself is not combustible; it merely facilitates the combus tion of other things. (氧本身是不可燃的,它只是帮助别的东西燃烧。 This is just as well, for if oxygen were corn bustible, each time you lit a match all the air
发表于:2019-02-25 / 阅读(46) / 评论(0)
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