更妙的是，这种信息传输的触发不需要用户直接干预。
Better yet, this information transfer can be triggered without any direct user intervention.
当为系统的正当用户而生成的数据在导线中传输时，可以通过观测来获取这类信息。
One might capture such information by observing the data generated for valid users of the system as it whizzes by on a wire.
年引入的 ZIP 文件格式通过删除文件中的空白空间和冗余信息以及把多个文件打成一个包的方式，帮助计算机用户传输大型文件。
The ZIP file format, introduced in 1989, helps computer users transport large files by removing the empty spaces and redundant information from a file and by packaging multiple files into one bundle.
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