单词：bromochloride fluoromethane fire extinguisher
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We attended the wedding of an acquaintance's son. Because we did not know the young man or his bride, we decided to send them a practical household gift, a fire extinguisher. Apparently, the couple ma
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This is Whats Trending Today Elon Musk - head of electric carmaker Tesla and aerospace company SpaceX - is known for using creative methods to raise money for his businesses. He has successfully gotten tens of thousands of interested buyers to place
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On this Labor Day, there are two things I want you to know. Number one, I am going to keep fighting every single day, every single hour, every single minute, to turn this economy around and put people back to work and renew the American Dream, not ju
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This is Scientific Americans 60-Second Science, I am Cynthia Graber .This will just take a minute. How can we improve engines, inhalers and fire extinguishers? Maybe by copying a beetle. The bombardier beetle's name might scare off predators if they
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Follow your common sense You cannot hide yourself behind a fairytale forever and ever Only by revealing the hole truth can we disclose The soul of this bulwark forever and ever Forever and ever Indoctrinated minds so very often Contain sick thoughts
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介绍: smog 雾霾 mask 口罩、面膜 A mask is an object normally worn on the face, typically for protection, disguise（伪装）, performance, or entertainment. gas mask 防毒面 oxygen mask 氧气面罩 air purifier /?pj?r?fa??r/ 空气净化器
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