In nowadays information society, a disk is widely used as storage medium because of its high speed of data read-write and high performance price ratio.
在当今信息社会里，磁盘作为存储介质因为其数据读写的高速性和高性价比被广泛使用。
The last basic step involved in writing programs is to read data from and write data to a file.
编写程序的最后一个基本步骤就是从文件读取数据和把数据写入文件。
The data area classes are used to read, write, create, and delete data areas on the system.
数据区域类用于在系统上读取、写入、创建和删除数据区域。
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