protocol

/ˈproʊtəˌkɔl/

(computer science) rules determining the format and transmission of data

中文释义：协议；规程；礼仪

The Internet relies on TCP/IP protocol to transmit data between devices.

互联网依赖TCP/IP协议在设备之间传输数据。

Diplomatic protocol requires that ambassadors present their credentials to the host country.

外交礼仪要求大使向东道国递交国书。