/dɪˈdjuːs/
to form an opinion about sth based on the information or evidence that is available 推论；推断；演绎 SYN infer
~ sth (from sth)
We can deduce a lot from what people choose to buy.
从人们选购的东西可以作出多方面的推断。
~ (from sth) that, what, how, etc.…
Can we deduce from your silence that you do not approve?
你保持沉默，我们是否可以据此而推断出你不赞成？