With the rapid development of swine rising in our country, the number of large-scale hoggery is increasing.

随着养猪业在我国快速发展，规模化养猪场的数量在不断增加。

youdao

With the rapid development of swine rising in our country, the number of large-scale hoggery is increasing.

随着养猪业在我国快速发展，规模化养猪场的数量在不断增加。

youdao