明证

xī shā qún dǎo yī zhí shì wǒ guó lǐng tǔ zhè xiē wén wù jiù shì míng zhèng

西沙群岛一直是我国领土，这些文物就是明证。

These cultural relics are clear proof that the Xisha Islands have been China's territory.

chū shì míng zhèng

出示明证

produce a clear proof

tā de zhǐ wén jiù shì fàn zuì míng zhèng

他的指纹就是犯罪明证。

His finger-prints were a clear proof of his guilt.