终年 + Number + 岁
The adverb 终年 (zhōngnián) means "died at the age of" in Chinese. It is a formal expression used in obituaries and news reports to state the age at which someone passed away. It is placed before the number indicating age.
这位著名科学家于去年去世,终年八十五岁。
zhè wèi zhùmíng kēxuéjiā yú qùnián qùshì, zhōngnián bāshíwǔ suì.
This famous scientist passed away last year at the age of eighty-five.
那位老艺术家终年九十二岁,一生创作了无数作品。
nà wèi lǎo yìshùjiā zhōngnián jiǔshí'èr suì, yīshēng chuàngzuò le wúshù zuòpǐn.
That old artist passed away at the age of ninety-two, having created countless works in his lifetime.
他终年七十岁,为国家奉献了一辈子。
tā zhōngnián qīshí suì, wèi guójiā fèngxiàn le yíbèizi.
He passed away at the age of seventy, having devoted his entire life to the country.