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n.[医]结石,石,积石,牙垢;[数]运算,演算,微积分(学); 变形: 复数:calculusescalculi 英英释义: calculus[ 'kælkjuləs ]n.a hard lump produced by the concretion of mineral salts; found in hollow organs or ducts of the body同义词:concretionan incrustation that forms on the teeth and gums同义词:t