What does it mean to catch up with time and time?

Time flies is the passage of time day by day, which means the same thing as time flies, time flies, and so on.

There are three interpretations of the meaning of time, as follows:

1, time; Time: Time is fleeting. Kill time.

2. Period: He joined the army during War of Resistance against Japanese Aggression's period.

3, days: a good time to have plenty of food and clothing.

Time flies:

Interpretation: 1, like the time and years that have passed by. In the past, fortune tellers called people a year's luck.

Time flies like water, which means that time is gone forever. It refers to the time and years like water.