例如，考虑校验和，如果文件格式包含一个校验和，在将文件传至应用程序前仅仅修改此校验和就可以使其同随机数据相匹配。
For example, consider checksums. If a file format contains a checksum, then you simply modify the checksum so it matches your random data before passing the file to the application.
只要她愿意， 她可以创建文件的副本或者只保留一个副本。 她也可以放弃之前所做出的修改，或者改变文件格式。
If she wants, she can make tracked or one-off copies of it, rename it, discard any changes she's made, or change the file format.
RAW：指一种数码照片的文件格式，这种数码照片未经压缩，基本上未被相机芯片所修改，因此包含所有的颜色和影像细节。
RAW: A file format for digital photographs that is uncompressed and largely unmodified by the camera's chips, and therefore includes every detail of the color and image.
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