how do you undersdand "once the sands have run out of a person's hourglass,how do you undersdand "once the sands have run out of a person's hourglass,they cannot be replaced"

How do you do? How Do You Do? how do you do? how do you do How do you do how do you do How do you do How do you you How do you spell how do you like . how do you how do you how do you how do you feel How dare you do How do you how do you know how do you feel