一生

tā yī shēng cóng shì yī xué yán jiū

他一生从事医学研究。

He devoted all his life to medical research.

tā yī shēng mù dǔ le xǔ duō biàn huà

他一生目睹了许多变化。

He saw many changes in his lifetime.

wǒ yī shēng zhōng cóng méi yǒu jīng lì guo zhè yàng de shì qing

我一生中从没有经历过这样的事情。

I've never come across such an experience in my time.

jié shù le zhè yī shēng

结束了这一生

end this life

tā de yī shēng shì quán xīn quán yì wèi rén mín fú wù de yī shēng

他的一生，是全心全意为人民服务的一生。

His whole life was a life spent wholeheartedly serving the people.

shōu jí yì shù pǐn shì tā yī shēng de gōng zuò

收集艺术品是她一生的工作。

The art collection was her life's work.

nà tiān réng rán shì wǒ yī shēng zhōng zuì měi hǎo de rì zi

那天仍然是我一生中最美好的日子。

That day still stands out as the greatest day in my life.