调暗灯光—光线，即使是一点点也会干扰睡眠激素，从而刺激到大脑。如果可以的话，戴眼罩或者调整一下闹钟。

Dim the lights - light, even a small amount interferes with sleep hormones and stimulates the brain. Wear an eye mask if necessary or turn the alarm clock around.

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调整亮度：调暗屏幕是另一种延长电池寿命的方式。

Adjust brightness: Dimming the screen is another way to extend battery life.

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