Porcine reproductive and respiratory syndrome (PRRS) is a viral disease of domestic swine characterized by pregnant sow reproductive failure, dyspnea, high mortality in piglets and respiratory signs in growing pigs.是什么意思_Porcine reproductive and respiratory syndrome (PRRS) is a viral disease of domestic swine characterized by pregnant sow reproductive failure, dyspnea, high mortality in piglets and respiratory signs in growing pigs.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句