SDP is not really a protocol, but rather a message syntax that can describe another protocol connection.

SDP并不是一个协议，而是可以描述另一个协议连接的消息语法。

youdao

This requires that a certificate for the externally visible hostname be stored in a Cryptographic Message Syntax (CMS) key database file.

这要求将外部可见的主机名的凭证存储在一个Cryptographic Message Syntax (CMS)密钥数据库文件中。

youdao

What is the exact syntax of the error message?

错误消息的确切语法是什么样的？

youdao

The message posted to Hacker News used a search syntax that exposed a system used by Facebook that lets users quickly log back in to their account.

BBC: Facebook flaw bypasses password protections