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"

问题描述:

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"

你是怎样理解“一旦沙子进入一个人的沙漏”?

时光一去不复返

It means that time is running and it'll never come back.Just like the old saying goes:Time and tide wait for no man.

你怎么undersdand“一旦岁月的沙粒从一个人的沙漏,