The "downer cow" syndrome is a common appearance of some diseases, so it must be analyzed from the basis of various related diseases.
“奶牛卧倒不起综合征”是一些疾病的共有症状表现，必须从各种有关疾病的本质上进行分析研究。
The "downer cow" syndrome is a common appearance of some diseases, so it must be analyzed from the basis of various related diseases.
“奶牛卧倒不起综合征”是一些疾病的共有症状表现，必须从各种有关疾病的本质上进行分析研究。
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