一个红色的小纸包。
A little oblong packet, enveloped in blue paper, fell from one of the pockets of the greatcoat.
一个长方形蓝纸包从那厚大衣的一只衣袋里掉了出来。
This paper analyzes packet capturing principle in detail combined with the structure and functions of the software and introduces its application in designing a network security and watch system.
文中结合该软件包的结构与功能对包捕获原理进行了详细的分析，并介绍了其在网络安全监控系统中的应用。
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