Internet Protocol (IP) provides a host-to-host packet — or datagram — delivery service.

网际协议(IP)提供“主机对主机”包(或数据报)传递服务。

youdao

As defined in Wikipedia, the Internet is a worldwide, publicly accessible series of interconnected computer networks that transmit data by packet switching using the standard Internet Protocol (IP).

如同在Wikipedia中所定义的，Internet是世界范围内、可公开访问的一系列互相连通的计算机网络，这些网络通过使用标准Internet协议(ip)的分组交换传输数据。

youdao

The weakness in Internet Protocol is that the source host itself fills in the IP source host id, and there is no provision in TCP/IP to discover the true origin of a packet.

IP协议中最脆弱的策略就是让源主机自己填写源IP地址，并且在TCP／IP协议中也没有提供一种机制来验证源IP地址的真实性。

youdao

And it features what is called mobile Internet protocol (IP), a packet data service that requires users to pay only for the amount of data they send and receive rather than for the amount of time spent on line.

FORBES: Down To Earth