猪繁殖和呼吸综合症是近年来国内外引人注目的一种新的病毒性猪传染病。

Pig Rebreeding and PRRS is a new noticeable viral infectious pig disease at home and abroad.

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猪繁殖和呼吸综合症是近年来国内外引人注目的一种新的病毒性猪传染病。

Pig Rebreeding and PRRS is a new noticeable viral infectious pig disease at home and abroad.

youdao