deduce

deduce 是“根据已知事实或规则推导出结论”，也可在较旧用法中表示“取得、源自”或“带走”。现代英语中最重要的是逻辑推断这一义项。

💡 记忆钩子

把事实看成一条条线索，把结论看成线索通向的终点：沿着规则从已知信息一步步“引出”结论，就是 deduce。这个“引出”还曾扩展为从来源取得、由来源产生，甚至把东西带走，但这些用法如今多已过时。

📝 学习建议

先掌握“根据事实推断结论”这一现代核心义，不要把它简单理解成普通的“猜测”；deduce 通常暗示有证据或逻辑依据。
不要与“扣除、减去”混淆：这个义项虽曾存在，但在现代英语中基本不使用。

📖 中文释义

verb

core 推导出结论

📖 根据已有事实、证据或规则，经过逻辑推理把一个结论“引出来”。重点不在猜，而在结论能由依据合理推出。

💡 常用模式是“deduce + 结论 + from + 事实或证据”，或“deduce from + 事实 + that...”。这个词常见于分析、科学、调查和较正式的书面语中，宾语通常是结论、原因或信息。不要用它表示没有依据的猜测，也不要把 from 后面的依据省略到让推理关系不清楚。

transitive

From the footprints, the detective deduced that someone had entered through the window.

侦探根据脚印推断，有人是从窗户进来的。

We can deduce the answer from the information in the report.

我们可以根据报告中的信息推导出答案。
rare 有条理地整理或说明

📖 在较少见的旧用法中，deduce 可表示把某事按条理展开、说明或记录，好像把内容一步步引出来。

transitive uncommon
rare 从来源取得

📖 在古旧或文学用法中，deduce 可表示从某个来源取得某物，与“从来源引出”这一旧的核心意象有关。

archaic transitive
rare 源自某处

📖 在古旧用法中，deduce 可表示某事物由某个来源产生或传承下来。

archaic intransitive
rare 扣除、减去

📖 这是已经过时的用法，表示从整体中拿走一部分，也就是扣除或减去；现代英语中通常不用 deduce 表达这个意思。

obsolete transitive
rare 带出、引出

📖 这是过时的字面用法，表示把某物或某群体引到外面，与“引出”这一最早的词源意象直接相关。

obsolete transitive

deduces present,singular,third-person deducing participle,present deduced participle,past deduced past deduce first-person,present,singular deduced first-person,past,singular deduce present,second-person,singular deducest archaic,present,second-person,singular deduced past,second-person,singular deducedst archaic,past,second-person,singular deduceth archaic,present,singular,third-person deduced past,singular,third-person deduce plural,present deduced past,plural deduce present,subjunctive deduced past,subjunctive deduce imperative,present - imperative,past

📘 英文释义 (WordNet) 共 2 组

reason by deduction; establish by deduction

同义词集: deduce infer deduct derive

上位: conclude, reason, reason out 下位: elicit

conclude by reasoning; in logic

同义词集: deduce infer

上位: conclude, reason, reason out

🌳 词源

源自拉丁语 dēdūcere，原意与“从某处引出、带出、引导”有关，后来发展出“从事实中推导出结论”的意思。

From Late Middle English deducen (“to demonstrate, prove, show; to argue, infer; to bring, lead; to turn (something) to a use; to deduct”), borrowed from Latin dēdūcere, the present active infinitive of dēdūcō (“to lead or bring out or away; to accompany, conduct, escort; (figuratively) to derive, discover, deduce”); from dē- (prefix meaning ‘from, away from’) + dūcere (the present active infinitive of dūcō (“to conduct, guide, lead; to draw, pull; to consider, regard, think”), ultimately from Proto-Indo-European *dewk- (“to lead; to draw, pull”)).

🔄 变式

- imperat deduced 1st_sg deducedst archaic deduces present deducest archaic deduceth archaic deducing present

🏷 单词标签 & 词根