求翻译：呼吸系统（respiratory system）是执行机体和外界进行气体交换的器官，由呼吸道和肺二部分组成（图2-28）。呼吸道包括鼻腔、咽、喉、气管和支气管，临床上将鼻腔、咽、喉叫上呼吸道，气管和支气管叫下呼吸道是什么意思？

Respiratory system (respiratory system) is the executive body and the external gas exchange organs, the respiratory tract and lungs of two parts (Figure 2-28). Respiratory tract including the nasal cavity, pharynx, larynx, trachea and bronchi, clinically nasal cavity, pharynx, larynx called the uppe

Respiratory (respiratory system) is the implementation of the organism and the outside world for gas exchange by respiratory organ, consisting of 2 parts and the lungs (Figure 2 - 28 ). respiratory tract including nasal, throat, larynx, trachea and bronchial, clinical, nasal cavity, throat, larynx a

The respiratory system (respiratory system) is carries out organism and the outside carries on the exchange of gases the organ, is composed (Figure by the respiratory tract and the lung two parts 2-28).The respiratory tract including the nasal cavity, swallows, the throat, the trachea and the bronch

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Respiratory system (respiratory system) is the executive body and the external gas exchange organs, the respiratory tract and lungs of two parts (Figure 2-28). Respiratory tract including the nasal cavity, pharynx, larynx, trachea and bronchi, clinically nasal cavity, pharynx, larynx called the uppe