英语高手进‘once the sands...How do you understand "Once the sands have run out of a person’s hourglass ,they can not be replaced’?用英文回答上述问题,尽可能多的用英文阐述，答得好的加分
问题描述：
英语高手进‘once the sands...
How do you understand "Once the sands have run out of a person’s hourglass ,they can not be replaced’?
用英文回答上述问题,
尽可能多的用英文阐述，答得好的加分
答
how time flies!
once the things lost it can't be turn over again!
答
something or somebody is lost,you never get it/sb. back.
答
Once lost,there is no way to regret,to treasure the present one