4 sentences

1. 这是一个有力的反驳。

   zhè shì yī gè yǒu​lì de fǎn​bó.

   This is a strong rebuttal.

   Source: Dong Chinese Dictionary

2. 你说的很有道理，我没法反驳。

   nǐ shuō de hěn yǒu dào​li, wǒ méi​fǎ fǎn​bó.

   What you say makes a lot of sense; I can't refute it.

   Source: Dong Chinese Dictionary

3. 他引用了大量事实来反驳对方的论点。

   tā yǐn​yòng le dà​liàng shì​shí lái fǎn​bó duì​fāng de lùn​diǎn.

   He cited numerous facts to refute the opponent's argument.

   Source: Dong Chinese Dictionary

4. 他在辩论中提出的观点非常锐利，令人无法反驳。

   tā zài biàn​lùn zhōng tí​chū de guān​diǎn fēi​cháng ruì​lì, lìng rén wú​fǎ fǎn​bó.

   The points he made in the debate were very sharp and impossible to refute.

   Source: Dong Chinese Dictionary