VERB
推测;猜测;臆测
If you surmise that something is true, you guess it from the available evidence, although you do not know for certain.
例句
There's so little to go on, we can only surmise what happened...
几乎毫无凭据，我们只能猜测发生了什么。
He surmised that he had discovered one of the illegal streets.
他推测自己已经发现了一条非法活动猖獗的街道。