1 [C,U] finding an answer by using mathematics （用数学方法）计算: I'll have to do a few calculationsbefore telling you how much I can afford. 我要做一些运算才能告诉你我花得起多少钱。Calculation of the exact cost is impossible. 要给成本算出一个准确的数字是不可能的。

2 [U] (formal 正式) careful planning in order to achieve what you want, without considering other people 处心积虑（为谋私利）: His actions were clearly the result of deliberate calculation. 他的所作所为显然都是深思熟虑的结果。