Time waits for no one. If it flows away, it will never come to us again. We can't take charge of our time but we should know the importance of time and cherish time.
Yesterday has become the history. Nothing we can do to save it. Tomorrow is not within our reach. We don't know what will happen tomorrow. So the only thing we can do is to cherish what we have today and fight for tomorrow. Victory only belongs to those who work very hard! Therefore, we should make full use of today, fighting for what we want.