1 [U] [C] the act of calculating sth, especially in a way that is not very exact 估算；估计

2 [C] [usu.sing] [U] (formal 正式) a time when sb's actions will be judged to be right or wrong and they may be punished 报应；报偿: In the final reckoning truth is rewarded. 真理最终会得到报偿。Officials concerned with environmental policy predict that a day of reckoning will come. 环境政策官员预言，遭报应的一天总会来到。