在保护的自行车是主要的原因，自行车灯光设计。
The protection of the bicyclist is the main reason that bike lights were designed.
我们看到汽车灯光在他自行车上的反射光，就停下来。
We saw the reflection of our car's light off the reflector on his bike and stopped.
夜间行车时，全车灯光突然熄灭，应当紧急制动，迅速停车。
When all lights of a vehicle suddenly go off while running at night, the driver should immediately brake and stop.
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