Traditional steganography hides its message as, say, every 20th word in a letter, or as the colour of every hundredth pixel in an electronic image.
2
当发送电子邮件时，你还可以把一份文件作为附件发送，该文件可以是图片、程序、或声音文件等。
When you send an e-mail you can also send a file as an attachment and that file can be a graphic, a program, a sound or whatever.
《柯林斯英汉双解大词典》
3
传统书籍只能使用图片和插图，而电子书可以为读者提供无限的链接：文本、图片和视频。
Where traditional books had to make do with photographs and illustrations, an e-book can provide readers with an unlimited number of links: to texts, pictures, and videos.
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