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1. This compound is a key intermediate in the production of plastics.
这种化合物是塑料生产过程中的关键中间体。
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2. The chemical was used as a solvent for many years before it was replaced by other chemicals.
这种化学物质在被其他化学品取代之前已经使用了多年。
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3. The molecule has a strong affinity for water, making it an effective solvent for many applications.
这种分子对水有很强的亲和力，使其在许多应用中都是一种有效的溶剂。