ra·ti·oc·i·na·tion
noun/ˌrætiˌɒsɪˈneɪʃn/
/ˌreɪʃiˌəʊsɪˈneɪʃn/
[uncountable] (formal)- the process of thinking or arguing about something in a logical way
推理；推论 Word Originmid 17th cent.: from Latin ratiocinat- ‘deliberated, calculated’, from the verb ratiocinari, from ratio (see ratio).