At any given point, you probably don't know exactly how many computers are running.
在任何时刻，您可能都无法知道到底有多少计算机在运行。
How many computers are in the room?
在房间里有多少台电脑？
How many computers do I need to run a cluster, and why?
集群中需要多少台计算机呢?为什么?。
How many computers do I need to run a cluster, and why?
集群中需要多少台计算机呢?为什么?。
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