Trachea - 气管, Lungs, Bronchi - 支气管, Alveoli - 肺泡, Diaphragm - 横膈膜, Respiratory system - 呼吸系统, Inhale - To breathe in, Exhale - To breathe out, Nasal Cavity - 鼻腔, Capillary - 毛细血管, Bronchioles - 细支气管, The upper respiratory system - nose, nasal cavity, & pharynx, The lower respiratory system - larynx, trachea, bronchi, bronchiol tubes, alveoli,

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