Now that we've looked briefly at implementation, let's turn to the heart of this article: how two singletons can exist simultaneously.

前面已经简单地介绍了单例模式的实现方式，现在让我们进入主题：两个单例对象如何同时存在？

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This queuing process allows higher priority (as defined by the administrator) traffic to be serviced before lower priority traffic if insufficient resources exist to simultaneously serve all requests.

如果现有的资源不足以同时处理所有请求，这个排队过程会根据管理员定义的优先级，让高优先级的请求优先得到服务。

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These results suggest that the thalamic nuclei projecting to OT receive inputs from OT simultaneously, dual connections exist between OT and these thalamic nuclei.

实验证明，凡发纤维至OT的丘脑核团，同时也接受OT的纤维，它们之间存在着往返纤维联系。

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