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想像一下存在这样一个银行,每天早晨在你的账户中存入86400元。每天都没有余额,无法让你保留现金。每天晚上你没有花掉的部分都一笔勾销。
Imagine the existence of such a bank depositing 86,400 yuan into your account every morning. There is no balance every day, you can not keep your cash. Every night you have not spent part of a write-off.