Lesions occur mostly in the bursa of Fabricius,which becomes swollen and edematous 3-4days post-infection, then quickly regresses to a small size.是什么意思_Lesions occur mostly in the bursa of Fabricius,which becomes swollen and edematous 3-4days post-infection, then quickly regresses to a small size.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句