The third part was an unvarying quantity, but the first and second parts could be varied an infinite number of times.
第三部分是一个不变量，第一、二部分可以变化无穷。
Education alone can conduct us to that enjoyment which is, at once, best in quality, and infinite in quantity.
教育本身可以引领我到达这样的享受，曾经是在质量上最好的，在数量上是无限的。
Two basic assumptions of the classical economic order quantity (EOQ) model are the model has infinite horizon and the costs are static.
经典的经济订购批量（EOQ）问题有两个基本假设：时域无限和模型的费用参数不变。
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