vt.

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

   根據這些證據，我們推論他是有罪的。

   What do you deduce from these facts?

   從這些事實你能推斷出什麼？

2. 追溯

v.

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