In this case, the selection of the destination and the routing both occur per-message at run time.

对于这种情况，对每条消息的目标点和路由的选择都发生在运行时。

youdao

IBM NAS is used for authentication and optionally for per-message encryption between NFS client and server.

IBM NAS用于身份验证，也可以用于NFS客户端和服务器之间的消息加密。

youdao

Per message delivery semantics: These semantics allow for each message to be delivered differently as well as use a different guarantee level per message.

每消息传递语义：这些语义允许被传递的每个消息都是不同的，而且每个消息使用不同的保证级别。

youdao

As a result, users pay only a tiny data-transport charge, typically of a penny or so per message.

ECONOMIST: Texting