These gases would seriously damage the patient's respiratory system.这些毒气会严重损害患者的呼吸系统。If you smoke then the whole respiratory system is constantly under attack.如果抽烟，整个呼吸系统就会一直受到损害。There appears to be a dysfunction in the patient's respiratory system.患者的呼吸系统似乎出现功能失调。