suppositional

The theory is suppositional, so we need more evidence before we accept it.

这个理论是假设性的，因此我们需要更多证据才能接受它。

Her suppositional explanation did not convince the teacher, who wanted facts.

她臆测性的解释没有说服老师，老师想要的是事实。

Don't treat those suppositional claims as proven facts.

不要把那类推测性的说法当成已证实的事实。