the process of one event causing or producing another event 诱因；起因；原因 - (also causality)
the relationship between something that happens and the reason for it happening; the principle that nothing can happen without a cause 因果关系；因果律（或性）
Word Originlate 15th cent.: from Latin causatio(n-) ‘pretext’ (in medieval Latin ‘the action of causing’), from causare ‘to cause’.