SUPER SCIENCE

It’s time to go to bed

作者：teens

叮铃铃，睡觉时间到啦！

Most clocks wake you up in the morning. But this clock from India is different. It helps you go to bed on time. Set your bedtime on the clock. Then, you can see a character yawning (打哈欠). Also, you can hear the sound of yawning. Are you sleepy now?

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