the prime of one's life
01
a time in one's life when one is in the peak of one's physical condittion
例子
At the age of 75, the singer is not exactly in the prime of his life!
It's many a man and woman who, in old age, looks back on the prime of their lives with bittersweet nostalgia.
02
a period in one's life that brings one great happiness or success
例子
My father was in the prime of life when he was diagnosed with cancer.
