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liuzggg

木虫 (正式写手)

自信而不自负傲骨而不傲气
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crazyff12345

金虫 (正式写手)

极为重要的精细有机化工原料和中间体。广泛用于合成多种医药、香料、农药、液晶材料和缓蚀剂等。
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