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最佳答案:something to drink
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最佳答案:take these books to
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最佳答案:mig:金属极惰性气体保护metal inert gases(GMAW)TIG 钨极惰性气体保护电弧焊tungsten inert gases(GTAW)MMA
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最佳答案:As for mentioned above, I think it's hard to define this word, for everyone, adj
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最佳答案:According to the above summary of quantum mechanics, we can know the electrons o