常見例句雙語例句Acute bronchitis is usually caused by viral infections.急性支氣管炎通常是由病毒感染引起。Acute bronchitis can be caused by infection or by exposure to irritants.急性支氣管炎是由感染或接觸刺激物引起。Undernutrition increases the risk of upper respiratory tract infections and subsequent acute bronchitis, especially in children and older people.營養(yǎng)不良增加上呼吸道感染的風(fēng)險從而發(fā)生急性支氣管炎,特別是兒童和老人。 返回 acute bronchitis