once-in-a-lifetime

短语
大学 FREQ #23680

adj. 千载难逢的

教材释义与例句

千载难逢（的好机会）

释义与例句

adj.
  1. 1.

    Likely to happen only once in one's lifetime; extremely rare.

    千载难逢

    a once-in-a-lifetime opportunity to travel the world