- [uncountable, countable]
the process of using information you have in order to understand a particular situation or to find the answer to a problem 演绎；推论；推理 He arrived at the solution by a simple process of deduction. 他通过一番简单的推理得出了解决问题的方法。 If my deductions are correct, I can tell you who the killer was. 如果我的推论正确的话，我可以告诉你谁是凶手。 We can examine the bones of dinosaurs and make deductions about how they lived. 我们可以检查恐龙的骨骼，并推断它们是如何生活的。
Extra ExamplesTopics Maths and measurementb2She arrived at this conclusion by logical deduction. 她通过逻辑推理得出这个结论。 a detective with excellent powers of deduction 推理能力很强的侦探 We can make some deductions about the history of the ruins. 关于这一废墟的历史，我们可以作一些推论。
Oxford Collocations Dictionaryadjective- brilliant
- logical
- reasonable
- …
- make
- by deduction
- deduction about
- powers of deduction
- a process of deduction
- [uncountable, countable]
the process of taking an amount of something, especially money, away from a total; the amount that is taken away 扣除（额）；减去（数） The dividend will be paid without deduction of tax. 股息会免税发放。 - deduction from something
deductions from your pay for tax and pension contributions 从工资中扣除的税金和养老金供款的数额 The company automatically makes tax deductions from your salary. 公司会自动从你的工资中扣除税款。
Extra Examplesdeductions for travel costs 旅行费用扣除款项 monthly deductions for health insurance 每月扣除的医疗保险费 You should claim the deduction when you file your tax return. 你填写纳税申报单时应当要求扣除。
Oxford Collocations Dictionaryadjective- monthly
- weekly
- tax
- …
- make
- itemize
- claim
- …
- deduction for
- deduction from
Word Originlate Middle English: from Latin deductio(n-), from the verb deducere, from de- ‘down’ + ducere ‘lead’.