一生
Written yī shēng, said yì shēng — 一 is yí before a fourth tone and yì before the others.
Meaning
- all one's life; throughout one's life
Example sentence
他一生独身。
He remained single all his life.
Characters in 一生
一 one plus 生 life. A single lifetime, and it is used adverbially: 一生都在教书.