yídàn / shānchú / yuánshǐ / shùjù / bìng / fùgài / bèifèn / xìnxī / diūshī / jiù / kěnéng / biàn / de / bùkěnì

一旦删除原始数据并覆盖备份，信息丢失就可能变得不可逆。

Once the original data is deleted and the backup is overwritten, the loss of information may become irreversible.