Damage to defenses of lung leads to serious bacterial lung disease, especially if in combination with viruses such as pseudorabies and PRRS.是什么意思_Damage to defenses of lung leads to serious bacterial lung disease, especially if in combination with viruses such as pseudorabies and PRRS.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句