When you fly, you may have noticed that every time the plane takes off or lands at night the cabin crew dim the lights. The reason is to acclimatize passenger's eyes to darker surroundings.

不知您坐飞机的时候注意过没有，如果飞机是在夜晚降落，在降落的时候，机舱的灯光都会调暗。

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This feature will come in handy at that moment on a plane when the cabin lights go dim.

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