life-changing
US /ˈlaɪfˌtʃeɪn.dʒɪŋ/
UK /ˈlaɪfˌtʃeɪn.dʒɪŋ/

1.
改变人生的, 影响深远的
having such a profound effect on a person's life that it changes their character or destiny
:
•
Meeting her was a truly life-changing experience.
遇见她是一次真正改变人生的经历。
•
Winning the lottery was a life-changing event for them.
中彩票对他们来说是一件改变人生的大事。