What does the phrase "youth gone forever" mean?

The phrase "youth gone forever" laments that the years are getting older and the years are flying by. Sigh that time flies, never to return. It also expressed his feelings of remembering and thinking about the past.

Over time, the black hair is frosty and white, but it has failed to live up to youth. There are trees on the mountain, and there are branches on the trees. I like you, but you don't know.

The original sentence is: no matter how much green hair snow dyes, it will not bear the burden of fleeting time. There are trees on the mountain and branches on the wood. I don't know!

Shao Hua: The metaphor of good times.

Don't live up to a person's youth: don't live up to a good time, a good time.

Similar verse:

Guan Guan Luo Qiu, in Hezhou, is a gentle and graceful lady and a gentleman.

Between water and water, there are no words.

When you enter my lovesick door, you will know that I am lovesick for a long time and lovesick for a short time. I hope your heart is the same as mine and won't miss me!

I live at the head of the Yangtze River and you live at the end of the Yangtze River. I miss you every day and drink the Yangtze River water.

This situation has nowhere to disappear, only under the eyebrows and in my heart.

Flowers can be folded straight, don't wait until there are no flowers!

A moment that should last forever has come and gone before I know it.

Once the sea was difficult for water, it was always amber.