Like many queue algorithms, an empty queue consists of a single dummy node.
像许多队列算法一样，空队列只包含一个假节点。
If there is a slight skewing favoring an empty queue over a full one, the pipe will rarely fill and the reader will more often receive fresh Numbers.
如果有轻微的扭曲支持一个空的队列满的，管道将很少填补和读者经常会收到新的号码。
Instead of throwing an exception when the queue is empty, the reader thread now blocks itself on the condition variable.
当队列是空的时候，读线程现在并不抛出异常，而是在条件变量上阻塞自身。
A woman holds onto an empty water container as residents queue for supplies at a shop in the coastal town of Mito March 12 2011.
2011年3月12日，日本水户市沿海的镇上，一妇女手持空水盒，在一商店前的居民长队中等待补给。
A woman holds onto an empty water container as residents queue for supplies at a shop in the coastal town of Mito, March 12, 2011.
2011年3月12日，水户的沿海镇内，一妇女手持空水盒，在一商店前的居民长队中等待补给。
A woman holds onto an empty water container as residents queue for supplies at a shop in the coastal town of Mito, March 12, 2011.
2011年3月12日，水户的沿海镇内，一妇女手持空水盒，在一商店前的居民长队中等待补给。
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