以下为句子列表：
英文: It is presumptuous and non-productive of fencing historians to dismiss the complex frame of reference from which this system was derived.
中文: 击剑史学家们专横地很少提及这一复杂体系的起源。
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英文: The controversies between productive labour versus non-productive labour, and value-creating labour versus non-value creating labour are a classical issue in Marxist economics.
中文: 摘要生产劳动与非生产劳动、创造价值的劳动与不创造价值的劳动两个问题是马克思主义经济学界争论的经典问题。
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