单词：silica colloidal polishing
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For 40 years, Paul Karason was a fair skin son of the American Northwest, freckles and reddish-blond hair. Like most people who grow older, Pauls hair turned white. But how does he explain this? What was that Aha moment were you think, you know, my
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1. Q: Where is the conversation most probably taking place? A. At a newsstand. B. At a car dealer's. C. At a publishing house. D. At a newspaper office. 2. Q: What do we know about the man? A. He wants to get a new position. B. He is asking the woman
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Plant Self-defense Plants may appear to be helpless in the face of hungry,toothy animals but many plants have evolved interesting systems of self-defense. Coarse meadow grasses are a good example. If you run your finger along a blade of coarse grass,
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-Sheldon：Worst renaissance fair ever. renaissance：文艺复兴 fair：集市，集会 史上最逊的文艺复兴集会。 -Leonard：Please let it go, Sheldon. 别再墨迹了Sheldon。 -Sheldon：It was rife with historical inaccuracies. be rif
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DEVELOPMENT REPORT - Aid Group Designs System to Make Dirty Water Safe to Drink By Jill Moss Broadcast: Monday, October 17, 2005 This is Steve Ember with the VOA Special English Development Report. Ea
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Broadcast: May 5, 2003 By Jill Moss This is the VOA Special English Development Report. Each year more than two-million people die from diseases caused by drinking dirty water. That is the estimate of
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《Letter to Me》 是讲一个成熟男人写了一封信，寄给十七岁时的自己。第一次听到这首歌时心马上静了下来，想起了自己的中学时代。回忆中有很多青涩岁月，有很多自己觉得不能逾越的崁，有很多的困惑迷茫。给十七岁的自己写一封信：不要为了分手而心如刀绞，你最终能够熬
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This is the VOA Special English Development Report. Jeffrey Schwarz coordinates the water filter project for North America from the Carnegie Library Pot Shop, adapting technology developed in Central America during Hurricane Mitch in 1998 The Braddo
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AS IT IS 2015-07-14 Silica Sand Mining Worries Communities 美国硅砂矿引发社区担忧 The United States is increasing production of oil and natural gas through a process known as fracking. This process is sometimes called hydraulic fracking be
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Me vs. My Boss 我和我的老板 When I Take a long time--I am slow. 我用了很长时间我太慢。 When my boss takes a long time--He is thorough. 我老板用了很长时间他工作仔细。 When I don't do it--I am lazy. 我不做懒。 When
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How You Made Money 你怎么赚的钱 A young man asked an old rich man how he made his money. 一个年轻人问一位富有的老人是怎样赚到钱的。 The old guy fingered his worsted wool vest and said, Well, son, it was 1930. The depth of t
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