Communication is also reliable because messages are guaranteed to be delivered once and only once when using JMS.

通信还是可靠的，因为使用JMS时系统保证消息被传送一次而且仅传送一次。

youdao

ORB-based communication isn't reliable, and there's no guarantee that the messages and return values will be delivered to the intended targets.

基于OR B的通信是不可靠的，无法保证将消息和返回值发送到既定目标。

youdao

Reliable HTTP (HTTPR) addresses these deficiencies by proposing rules that make it possible to ensure that all messages are delivered to their destination in their exact form and only once.

可靠HTTP (Reliable HTTP, HTTPR)弥补了这些不足。它使得消息能够确保以确切的形式传递到目的地，并且只有一次传递。

youdao