constant英英释义noun 1 a quantity that does not vary Synonym: constant quantity invariable 2 a number representing a quantity assumed to have a fixed value in a specified mathematical context adj 1 steadfast in purpose or devotion or affection 2 uninterrupted in time and indefinitely long continuing Synonym: ceaseless incessant never-ending perpetual unceasing unremitting 3 unvarying in nature Synonym: changeless invariant unvarying  

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