f 和 p 选项分别指定输出详细信息（显示正在添加或提取的文件）、对文件（而不是磁带设备）进行写入/读取、保持权限和所有权。
The v, f, and p options specify verbose output (prints the files being added/extracted), writes/reads from a file (instead of a tape device), and retains permissions and ownership, respectively.
卡式录像机有二到七个磁头，以读取和刻画磁带上影像与音频的轨迹。
They have from two to seven tape heads that read and inscribe video and audio tracks on magnetic tape.
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