To not lose messages in such a situation, the system puts them on the hold queue.

为了在这种情况下不丢失消息，系统把消息放在持有队列中。

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The reason for messages observed on the BFM hold queue might be that the load on the system was temporarily too high, which might have led to transaction timeouts and rollbacks.

在BF m持有队列中出现消息的原因可能是系统的临时负载过高，这种情况可能导致事务超时并回滚。

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Each message must specify a queue that will hold it.

每个消息必须指定将容纳它的队列。

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But few have been completed in the past 15 years and many in that queue have been put on hold or withdrawn, for two reasons.

ECONOMIST: A survey of The future of energy