counterexample

counterexample

中文翻译：

名词：反例

形容词：反例的

词语辨析：

counterexample指的是通过反证法证明某个命题不成立时所提供的例子。它主要用于数学和逻辑推理中。与之相似的词语有"refutation"（驳斥）和"counterargument"（反驳）。

词汇扩充：

counterexample的动词形式为"counterexemplify"。

近义词：

refutation, counterargument

反义词：

proof, confirmation

柯林斯词典：

counterexample (noun): an example that disproves a statement or theorem

牛津词典：

counterexample (noun): an instance used to disprove a general statement or law

用法：

1. The mathematician provided a counterexample to show that the proposed theorem was incorrect. (数学家提供了一个反例来证明所提出的定理是错误的。)

2. The lawyer presented a counterexample to challenge the witness's testimony. (律师提出了一个反例来质疑证人的证词。)

3. The student used a counterexample to refute the professor's argument. (学生用一个反例来驳斥教授的论点。)

例句：

1. He provided a counterexample to prove his point. (他提供了一个反例来证明他的观点。)
2. The counterexample demonstrated the flaw in the theory. (这个反例展示了这个理论的缺陷。)
3. She used a counterexample to challenge the validity of the claim. (她用一个反例来质疑这个主张的有效性。)
4. The counterexample exposed the fallacy in their argument. (这个反例揭示了他们论证中的谬误。)
5. His counterexample effectively disproved the hypothesis. (他的反例有效地证明了这个假设是错误的。)
6. The counterexample provided a different perspective on the problem. (这个反例为这个问题提供了一个不同的视角。)
7. Without a counterexample, the theory remains unchallenged. (没有反例，这个理论仍然没有受到质疑。)
8. The professor encouraged his students to find counterexamples to test their arguments. (教授鼓励学生们找到反例来测试他们的论证。)
9. She analyzed the counterexample in detail to understand its implications. (她详细分析了这个反例以理解其含义。)
10. The counterexample served as a cautionary tale for future researchers. (这个反例成为未来研究者的一个警示故事。)
11. They used a counterexample to challenge the existing hypothesis. (他们用一个反例来质疑现有的假设。)
12. The counterexample highlighted the limitations of the current model. (这个反例突显了当前模型的局限性。)
13. He searched for a counterexample to disprove the widely accepted theory. (他寻找反例来证明这个广为接受的理论是错误的。)
14. Her counterexample raised doubts about the validity of the proposed algorithm. (她的反例对所提出的算法的有效性产生了怀疑。)
15. The counterexample provided a valuable insight into the problem. (这个反例为这个问题提供了有价值的见解。)
16. They used counterexamples from previous studies to support their argument. (他们使用了来自先前研究的反例来支持他们的论证。)
17. Without a counterexample, the hypothesis cannot be completely ruled out. (没有反例，这个假设无法完全排除。)
18. He carefully constructed a counterexample to challenge the existing theory. (他精心构造了一个反例来质疑现有的理论。)
19. The counterexample undermined the credibility of their research findings. (这个反例削弱了他们研究结果的可信度。)
20. She used counterexamples to illustrate the limitations of the current approach. (她用反例来说明当前方法的局限性。)