deduce

/dɪˈdjuːs/ v.
核心精讲 CET-6IELTS 词根 duc
一句话记住

推断；演绎；推论

释义与例句

v. 推断；演绎；推论
to reach an answer or decision by thinking carefully about the known facts
  1. From the wet umbrella, she deduced that it was raining outside.
    从湿漉漉的雨伞，她推断外面在下雨。
  2. Detectives deduced the time of the crime from the broken clock.
    侦探从停摆的钟推断出案发时间。
展开其余 3 条例句
  1. We can deduce from these figures that sales are falling.
    我们可以从这些数字推断出销量正在下滑。
  2. He deduced that the letter had been written in a hurry.
    他推断这封信写得很匆忙。
  3. The students were asked to deduce the rule from the examples.
    学生们被要求从例子中推导出规则。

词源与构词

de-（向下、从……出）+ ducere（引导）：从已知事实中把结论“引出来”，就是推断。

de- 前缀 · down from，从……出
duc 词根 · to lead，引导
记忆钩子 de（向外）+ duc（引导）：把结论从事实里引出来，就是推断。

词族与关联词

同根词（同一个词根长出来的词）
  • abduct 绑架；诱拐；劫持
    The businessman was abducted on his way home from the office. 这位商人在从办公室回家的路上被绑架了。
  • conduct 进行；实施；指挥
    The team conducted a survey. 团队进行了一项调查。
  • deduct 扣除；减去（尤指从总额中）
    The company deducts tax from every salary payment. 公司每次发薪都会代扣税款。
  • educate 教育；培养
    The program educates children about food safety. 这个项目教育孩子们了解食品安全。
  • induce 诱使；劝说（某人做某事）
    Nothing would induce me to sign such a contract. 什么也不能诱使我在这样的合同上签字。
  • introduce 介绍；引入；推行
    Let me introduce my colleague. 我来介绍一下我的同事。
  • produce 生产；产生；出示
    The factory produces 500 cars a day. 这家工厂每天生产 500 辆汽车。
  • reduce 减少；降低；使沦为
    We need to reduce our costs. 我们需要降低成本。
  • seduce 勾引；引诱（与他人发生性关系）
    The young man tried to seduce his colleague after the party. 聚会后，那个年轻人试图勾引他的同事。
词族（同一词根派生出的不同词性或形式）
  • deduction 推论；推理；扣除
    -ion 名词后缀，指推理过程或结论
  • deductive 演绎的；推论的
    -ive 形容词后缀，指从一般到特殊的推理方式
同义词
  • infer 推断；推论
    infer 侧重根据证据间接判断，语气较正式；deduce 更强调按逻辑一步步推出结论。
    We can infer from her silence that she disagrees. 从她的沉默我们可以推断她不同意。
  • conclude 得出结论；断定
    conclude 泛指得出最终结论，不强调推理过程；deduce 强调由前提严密推演。
    The report concluded that the plan was too costly. 报告断定该计划成本过高。
易混词（形近或义近，注意区别）
  • deduct 扣除；减去
    deduct 尾字母是 -duct，指扣钱；deduce 是 -duce，指推理。两者同源但用途完全不同。
    The fee is deducted from your monthly salary. 这笔费用从你的月薪中扣除。
  • induce 诱使；引起
    induce 用 in-（向内），把想法“引进去”即诱使；deduce 用 de-（向外），把结论“引出来”即推断。
    Nothing could induce him to change his mind. 什么也不能诱使他改变主意。
常见搭配
  • deduce from 从……推断出
    She deduced the answer from the clues. 她从线索中推断出答案。
  • deduce that 推断出……
    Scientists deduced that the climate had changed. 科学家推断气候已经发生变化。
  • deduce the cause 推断原因
    Investigators tried to deduce the cause of the fire. 调查人员试图推断火灾的原因。