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to awaken; to arouse from sleep
to bring to one's senses; to disabuse (someone of)
to sober up
to dampen; to throw a damper on; to spoil
冷たい水で目を醒ます。
I wake myself up with cold water.
冷たい水で顔を洗って目を醒ました。
I washed my face with cold water to wake up.
大きな音で子供の目を醒ましてしまった。
I accidentally woke the child with a loud noise.