deduce
/dɪˈdju:s; dɪ`djus/ v[Tn, Tn.pr, Tf, Tw]
~ sth (from sth) arrive at (facts, a theory, etc) by reasoning; infer sth 用推理的方法获致（实情、 理论等）; 演绎; 推断
If a = b and b = c, we can deduce that a = c. 设a = b, b = c, 可以推断a = c.
Detectives deduced from the clues who had committed the crime. 侦探根据所掌握的线索推断出作案的人.