corollary (of/to something) a situation, an argument or a fact that is the natural and direct result of another one必然的结果（或结论）- In rural areas, the corollary of increased car ownership has been a rapid decline in the provision of public transport.在农村地区，增加汽车拥有量的必然结果是公共交通的提供迅速减少。
Topics Change, cause and effectc2, Opinion and argumentc2Word Originlate Middle English: from Latin corollarium ‘money paid for a garland or chaplet; gratuity’ (in late Latin ‘deduction’), from corolla, diminutive of corona ‘wreath, crown, chaplet’.