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不知您坐飛機的時候注意過沒有，如果飛機是在夜晚降落，在降落的時候，機艙的燈光都會調暗。這是基于什么原理呢？看了下面的解釋您就會明白了。

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 toacclimatizepassenger's eyes to darker surroundings. This isn't purely for comfort but is a valuable part of aircraft safety. If the plane had to be evacuated in an emergency, passenger's eyes would be better acclimatized to the darkness outside.

acclimatize: 使適應新環境，使服水土

（北京語言大學通訊員柴宇迪供稿 英語點津 Annabel 編輯）