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1.The process of pentolysis is a complex one, involving many steps and variables.
pentolysis 过程是一个复杂的过程，涉及许多步骤和变量。
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2. The study of pentolysis has led to significant advancements in the field.
pentolysis 的研究已经使该领域取得了重大进步。
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3.The research on pentolysis has been ongoing for several years, with promising results emerging.
pentolysis 的研究已经进行了几年，并取得了令人鼓舞的结果。