2. If young people don't work hard, old people will be sad.

We only live once in this world, so we should cherish time. We must live a real life and a valuable life. -Pavlov

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

5. Ten thousand years is too long to seize the day. -Mao Zedong

6. No matter how gluttonous time devours everything, we should strive to gain fame while this breath is still alive, so that the sickle of time can't hurt us. -Shakespeare

7. Don't always lament the past, it will never come back; We should improve the present wisely. We should devote ourselves to the confusing future with the firm will of not worrying or fearing.

-Longfellow

8. Don't sigh for the lost years, but face up to the time that has slipped away in a hurry. Brecht

9. When many people are stuck in a road, we should give way to a road and let those who cherish time go ahead.

-Socrates

10, a man who dares to waste even an hour shows that he still doesn't know how to cherish the full value of life. -Darwin