The tradeoffs between average speed of answer, service level, occupancy, telecom requirements and staff requirements.
平均应答时长，服务水平，占用率，中继线需求和员工需求之间的平衡；
Why does it seem like some languages are spoken faster than others? The answer is that speed depends on the average amount of information packed in a single syllable.
为什么有些语言的语速似乎别的语言要快？答案是，语速取决于单个音节所承载的平均信息量。
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