內容簡介

Describes the different parts of the respiratory system and how they enable you to breathe. Inside your chest, a set of expandable 'bags' helps keep your heart pumping and your blood moving. As the main part of your respiratory system, your amazing lungspull in oxygen and push out poisons and germs to keep you healthy. You'll marvel at the many wonders of Your Lungs.
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  1. 博客來網路書店
    新書
    $280