The contradictor in the meeting was very persuasive.

会议中的那个矛盾者非常有说服力。

A good contradictor can make discussions more interesting.

一个好的矛盾者可以让讨论变得更有趣。

During the debate, the contradictor raised several valid objections.

在辩论中，这个矛盾者提出了几个有效的反对意见。

She played the role of the contradictor to test our arguments.

她扮演矛盾者的角色来测试我们的论点。

The contradictor always finds a way to challenge the speaker's points.

这个矛盾者总是能找到方法挑战演讲者的观点。