deduce

infer, deduce, conclude, gather, judge

动词 deduce:

1. reason by deduction; establish by deduction
   同义词：infer, deduct, derive
2. conclude by reasoning; in logic
   同义词：infer

1. From the presence of so many people at the party, we can deduce that it is a welcomed one.
   从参加聚会的人数之多我们可以看出，这次聚会是受人欢迎的。
2. If you saw a doctor left a house, you may deduce the fact that someone in the house be ill.
   假如你看见一个医生离开一家人家，你就可以推想那家里有人病了。
3. From this fact we may deduce that he is sick.
   从这个事实我们可推断他生病的事。
4. From seeing a doctor leaving a house, you may deduce that someone in the house is ill.
   从看见一个医生从一处住所出来，你就可以推断这一家有人生病了。

de.duce

v.tr.（及物动词）
de.duced,de.duc.ing,de.duc.es
To reach (a conclusion) by reasoning.
推论：通过推理得出（结论）
To infer from a general principle; reason deductively.
演绎推理：从一般的原则推断出；演绎推理
To trace the origin or derivation of.
溯源：追溯…的源头或起源于…

来源：
Middle English deducen
中古英语 deducen
from Latin dôdôcere [to lead away or down]
源自 拉丁语 dôdôcere [使转向]
dô- [de-]
dô- [前缀，表示"离开，脱离"]
dôcere [to lead] * see deuk-
dôcere [引导] *参见 deuk-

【引伸】
deduc.ible
adj.（形容词）