求翻译：而为了应对城市交通紧急情况，如警车，消防，救护车等，该系统设有三种人为强制控制交通灯的功能。三种强制状态分别为东西向红灯、南北向绿灯，东西向绿灯、南北向红灯，东西向、南北向皆为红灯。该系统还具有数码管显示信号灯倒计时时间的功能，在整个控制过程中，不论是普通模式下还是紧急模式下，控制系统都会显示倒计时。同时还能够根据车流变化的统计调节红绿灯时间来满足人们的需求。是什么意思？

In order to respond to emergency situations in urban traffic, such as police cars, fire, ambulance, etc., the system has three kinds of man-made forces control the function of the traffic lights. Three forced states to the east to the red, north and south to the green light from east to west to the

In order to respond to emergency transportation to the city, such as police, fire, ambulance, the system has a 3 man-made forces control the traffic lights. 3 is a mandatory thing to red light, green light, and south and north of the west and south and north of the green, red, and south and north of

But in order to should to the municipal transportation emergency case, like the police vehicle, the fire prevention, the ambulance and so on, this system be equipped with three kind of artificial compulsions to control the traffic light the function.Three kind of forced states respectively for the t

Urban traffic in response to emergency situations, such as police, fire, ambulance, and the system has three types of anthropogenic forcing control function of traffic lights. Three types of compulsory State things to light, respectively to the North and the green light, things to the red light to g

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