countersubject

例句：

1. 1. The professor countered the student's argument with evidence.
   教授用证据反驳了学生的观点。
2. 2. The debate was a countersubject to the main speech.
   这场辩论是主演讲的反论题。
3. 3.The researcher conducted a countersubject study to test the hypothesis.
   研究者进行了一项反论题研究来测试假设。