how do you understand:"once the sands have run out of one's hourglass,they cannot be replaced."

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how do you understand:"once the sands have run out of one's hourglass,they cannot be replaced."
how do you understand:"once the sands have run out of one's hourglass,they cannot be replaced."

how do you understand:"once the sands have run out of one's hourglass,they cannot be replaced."
字面上是说,一旦一个人沙漏里的沙子流完了,就再也不能再填满了.
就是说“光阴一去不复返.”
That means the same as "Time and tide wait for no man."
Once time past,it's gone forever.

一旦流出了沙漏，沙就无法再放回去。

time keeps flying no matter what. in my perspective, it suggests that time is precious and irreversibile, therefore, we need to cherish and make full use of time.

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