当我们夜晚抬头仰望天空,时常看到来往的飞机闪烁着不同颜色和亮度的灯。也许你并没太在意其中的含义,也许你不会想到小小闪灯对空中飞行安全有着重要作用。其实,这些种类繁多、功能各异的闪烁着的小灯大有学问。 When we look up at the sky at night, we often see the coming and coming planes flashing lights of different colors and brightness. Maybe you didn’t care too much about what it meant. Maybe you wouldn’t think that the little flasher had an important effect on air safety. In fact, these various types of flashing small lamps with different functions have great knowledge.