surmise

There's so little to go on, we can only surmise what happened.

几乎没有什么可继续进行的，我们只能猜测发生过的事。

It is mere surmise that Bosch had Brant's poem in mind when doing this painting.

博斯画这幅画时头脑里想着勃朗特的诗，这只是猜测而已。