formalize
verb [ T ] (UK usually formalise) uk/ˈfɔː.mə.laɪz/ us/ˈfɔːr.mə.laɪz/
使成为正式;使有固定体系;使定形
to make something official or decide to arrange it according to a fixed structure
These informal gatherings have become increasingly formalized in the last few years. 这些聚会起初很随意，但是在过去几年里变得越来越正式。
They offered me the job, but the contract has not been formalized yet. 他们把工作给了我，但是还没有正式签合同。