It means telling us to cherish time and not to waste it.

This is a famous saying of Ostrovschi, specifically: The most precious thing is life. Life is only once for a person. Therefore, a person's life should be spent like this: when looking back, don't regret wasting your time, and don't be ashamed of being mediocre; In this way, when he dies, he can say that I have devoted my life and all my energy to the most precious cause of life and fought for the liberation of mankind. We must seize the time to live, because even a sudden illness or accident may end life.

Cherish the words of time: 1, tomorrow is tomorrow, how many tomorrows.

2, young and old don't work hard, the boss is sad.

We only live once in the world, so we should cherish our time. We must live a real life and a valuable life.

4, an inch of time and an inch of gold, an inch of gold can not buy an inch of time.