astral movement clock
夜光时钟 night clock
台式夜光电钟 desk type luminous electric clock
夜光闹钟 luminous alarm clock
夜光挂钟 luminous wall clock
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科学家们很久以前就发现，昼夜光线的变化对于设置生物钟起着重要的作用。
Scientists have known for a long time that the light of day and the dark of night play important roles in setting our internal clocks.
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