phrase, idiomatic
cannot prove the point; to be insufficient evidence
如果我們説，這是古代，不足為據，他們又可以搬出英滅印度的事實，證明小而強的資本主義國家能夠滅亡大而弱的落後國家。
如果我们说，这是古代，不足为据，他们又可以搬出英灭印度的事实，证明小而强的资本主义国家能够灭亡大而弱的落后国家。
rú guǒ wǒ men shuō ， zhè shì gǔ dài ， bù zú wéi jù ， tā men yòu kě yǐ bān chū yīng miè yìn dù de shì shí ， zhèng míng xiǎo ér qiáng de zī běn zhǔ yì guó jiā néng gòu miè wáng dà ér ruò de luò hòu guó jiā ． If we say these events occurred long ago and do not prove the point, they can cite the British subjugation of India to prove that a small but strong capitalist country can vanquish a large but weak and backward country.
Examples (Wiktionary)
Mandarin
如果我们说，这是古代，不足为据，他们又可以搬出英灭印度的事实，证明小而强的资本主义国家能够灭亡大而弱的落后国家。
如果我們説，這是古代，不足為據，他們又可以搬出英滅印度的事實，證明小而強的資本主義國家能夠滅亡大而弱的落後國家。
rú guǒ wǒ men shuō ， zhè shì gǔ dài ， bù zú wéi jù ， tā men yòu kě yǐ bān chū yīng miè yìn dù de shì shí ， zhèng míng xiǎo ér qiáng de zī běn zhǔ yì guó jiā néng gòu miè wáng dà ér ruò de luò hòu guó jiā ．
If we say these events occurred long ago and do not prove the point, they can cite the British subjugation of India to prove that a small but strong capitalist country can vanquish a large but weak and backward country.