外部存储器，也称辅存，是内存的延伸。
External memory, also known as secondary storage, is extension of the internal memory.
而不再判断它是否被改写过，也不将它写回到辅存。
Rather than judge whether it be redrafted, it was not to return to the secondary deposit.
而不再判断它是否被改写过，也不将它写回到辅存。
Rather than judge whether it be redrafted, it was not to return to the secondary deposit.
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