When you're working on a file, it's saving constantly to RAM but also hopefully to disc, the hard disk so you don't actually lose it if the power goes off.
当你打开一个文件，它不断地保存在内存中，但对于光盘，硬盘，当你断开电源的时候，数据不会丢失。
When you're working on a file, it's saving constantly to RAM but also hopefully to disc, the hard disk so you don't actually lose it if the power goes off.
当你打开一个文件，它不断地保存在内存中，但对于光盘，硬盘，当你断开电源的时候，数据不会丢失。
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