Kphrase next breath way infection的用法和樣例：
例句
- He's suffering from an acute infection of the lower respiratory tract.
他患有急性下呼吸道感染。 - Respiratory syncytial virus and adenovirus are two causes of pediatric common lower respiratory tract infection, threatening the health of children.
呼吸道合胞病毒和腺病毒是小兒常見的下呼吸道感染的兩個病原，嚴重威脅小兒的健康。
