The sender computes the hash value for the original data and sends both the original data and the HMAC as a single message.

传送者会计算原始资料的杂凑值，并且将原始资料和hmac一起当做单一讯息传送。

youdao

Moreover, when the file is accessed, it can be read in its entirety and put to the queue as a single message or as a set of records each in its own MQ message.

此外，访问文件时，可以读取整个文件并作为单个消息放在队列中，或者作为一组记录并将每个记录放在自己的MQ消息中。

youdao

Like a synchronous service proxy, the pair of message queues ACTS as a single address the consumer USES to invoke the service, regardless of how many providers may be listening, as shown in Figure 5.

与同步消息代理一样，这一对消息队列担当使用者用来调用服务的单个地址，而不管多少提供者可能正在侦听，如图5所示。

youdao

Other dark pools may show symbol and side, send single or market-wide IOIs or set criteria such as minimum participation requirements so that when an IOI message is distributed either to a single contra-side or a marketplace, there are ways of "reading" into the order information.

FORBES: Don't Be Afraid Of The Dark Pools