Pulmonary alveolar proteinosis (PAP) is rarely seen in Taiwan.According to the literature the incidence is one in two million with a male to female ratio of 3 to 1.是什么意思_Pulmonary alveolar proteinosis (PAP) is rarely seen in Taiwan.According to the literature the incidence is one in two million with a male to female ratio of 3 to 1.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句