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كيف كان يستيقظ البشر من نومهم قبل اختراع المنبّه؟

Keep going اختراعات 02 أبريل 2017

مع تقدم التكنولوجيا أصبح هناك أشكال متعددة من المنبهات، من المنبه العادي في الساعات إلى الهواتف المحمولة والأجهزة الإلكترونية، وهذا ما ...

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