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Pure mathematics is not closely distinquished form applied mathematics;
纯粹数学与应用数学密不可分；
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Mathematics is the science of pure quantity.
数学是研究纯量之科学。
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Mathematics % is the science of pure quantity.
数学是纯粹研究数量的科学。
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Mathematics % is the science of pure quantity.
数学是纯粹研究数量的科学。
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