在信息技术中，备份数字数据的过程包括生成数字数据的多个拷贝，以便能够在需要时恢复数据。
In information technology, the process of backing up digital data consists of making multiple copies of the digital data so that the data can be restored whenever there is a need.
《魅力》9月份售出4300份数字拷贝，但10月下滑了20%，11月也下滑了20%至2775份。
Glamour sold 4, 300 digital copies in September, but sales fell by 20% in October and then another 20% to 2, 775 in November.
在那种情况下，协议栈将会给每一个目的地址发送一份数据包拷贝。
In that case, the stack will automatically send a copy of the packet to each destination specified in the binding entry.
当CPU从主内存中读取数据时，一份数据拷贝将被存储在高速缓存中。
When the CPU reads data from main memory, a copy of this data is stored in the cache memory.
当CPU从主内存中读取数据时，一份数据拷贝将被存储在高速缓存中。
When the CPU reads data from main memory, a copy of this data is stored in the cache memory.
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