在交通流模拟过程中，随机输入车辆信息和交通流信息是模拟的开端。
The first step of the traffic simulating procedure is collecting the information of random inputting vehicles and traffic flow.
电信以信息转换为电子信号为开端。
Telecommunications begin with messages that are converted into electronic signals.
电信以信息转换为电子信号为开端。
Telecommunications begin with messages that are converted into electronic signals.
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