Somewhat obviously, they can be used to check the validity of a block of data such as a journal transaction.
显而易见，这种方式也可以被用来检查写入数据(比如日志事务)的有效性。
This single number can be used to check that particular block of data for any changes.
这个数字用来检出它所代表的数据块有无变化。
This single number can be used to check that particular block of data for any changes.
这个数字用来检出它所代表的数据块有无变化。
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