vt.

1. 演绎，推论[（+from）][+that]
   On the basis of the evidence we deduced that he was guilty.

   根据这些证据，我们推论他是有罪的。

   What do you deduce from these facts?

   从这些事实你能推断出什么？

2. 追溯

v.

1. arrive at (a fact or a conclusion) by reasoning.
2. archaic trace the course or derivation of.