鉴证

hé tong jiàn zhèng rén

合同鉴证人

contract authenticator

jiàn zhèng jì shù

鉴证技术

appraising technology

tā zài bù duàn de lǚ xíng zhōng jiàn zhèng zhe shēng lǎo bìng sǐ

他在不断的旅行中鉴证着生老病死。

He saw the reality of birth and death, disease and old age constantly in his travels.