Someone who receives a red packet on Chinese New Year or on his or her birthday should not open it in front of the giver.
在中国新年或生日时收到红包的人不应该当着送红包的人的面打开它。
As an application executes, it makes system calls to the underlying operating system whenever it needs to open a file, send a packet, or otherwise use system resources.
在应用程序的执行过程中，当需要打开文件、发送数据包或者使用系统资源时，它会对基础操作系统进行相应的系统调用。
When a new TCP connection comes in from a client by means of a packet with the SYN bit set, the server creates an entry for the half-open connection and responds with a SYN-ACK packet.
当从客户机发来新的TCP连接时，数据包设置了SY n位，服务器就为这个半开的连接创建一个条目，并用一个SYN - ACK数据包进行响应。
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