为了缩短人们的候梯时间、乘梯时间、减少能量损耗，需要安装多台电梯并对其进行集中统一的控制。
In order to shorten people waiting time, elevators' running time and reduce elevators 'energy losses, more elevators should be installed and the control of elevators should be unified.
为了缩短人们的候梯时间、乘梯时间、减少能量损耗，需要安装多台电梯并对其进行集中统一的控制。
In order to shorten people waiting time, elevators' running time and reduce elevators 'energy losses, more elevators should be installed and the control of elevators should be unified.
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