corollary
n
~ (of/to sth) (fml 文) natural consequence or result; thing that logically must be so, once sth else has been established 自然的结果; 推断
Neither of them knew about it, and the corollary of that is that someone else revealed the secret. 他们两人并不知道这回事, 因此一定是另外有人泄露了秘密.