Sensors embedded in streets can accurately count vehicles, for example, but cannot count passengers or detect pedestrians and cyclists.
嵌入街道的传感器可以准确的数出汽车的数量，但却不能计算出乘客数量也不能探测到行人或骑自行车的人。
The first hour on two wheels is not for the faint hearted. The lack of space means pedestrians, cyclists and vehicles all vie for pavement.
对于心脏不好的人来说，骑车的第一个小时肯定不怎么好受。行人、骑车人和汽车在车道上分寸必争。
At all these locations, look left and right to check for vehicles or pedestrians about to enter the road.
在所有这些位置，要观察左侧右侧，注意将要进入公路的其它车辆及行人。
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