have one's whole life ahead of one

动词 v.

英文释义

动词 v.
  1. To be young, and therefore have many years left to live and experience life. informal
    — You're only 25; you have your whole life ahead of you. Go out and travel and see the world.

词源

The phrase is an exaggeration, the implication being that by being young one has barely experienced life at all.
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