I enjoy being with young friends as I get to feel their vigor of youth and passion for life.

我喜欢同青年朋友们在一起，感受青春的活力，感受生命的火红。

youdao

To make good use of life one should have in youth the experience of advanced years, and in old age the vigor of youth.

青年而有老年之经验，老年而有青年之朝气，就能使人生发挥更大的作用。

youdao

To make good use of life, one should have in youth the experience of advanced years, and in old age the vigor of youth.

青年而有老年之经验，老年而有青年之朝气，就能使人生发挥更大的作用。

youdao

She had been feeling envious for a long time of the higher life of the state, where there was now heroism, renown, and vigor, and where the youth and strength of an old woman, vainly expended in deprivation and horror in the old days, were in demand again.

NEWYORKER: Among Animals and Plants