哪有几台电脑？
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?。
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。
Before the advent of computers, not many people knew how to type.
计算机出现之前，没有多少人会打字。
Before the advent of computers, not many people knew how to type.
计算机出现之前，没有多少人会打字。
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