先前对不同地域的猪群进行的调查表明，猪戊型肝炎病毒感染在世界范围内普遍存在。

Previous surveys of pigs in different geography found that swine HEV infection is common among pigs worldwide.

youdao

先前对不同地域的猪群进行的调查表明，猪戊型肝炎病毒感染在世界范围内普遍存在。

Previous surveys of pigs in different geography found that swine HEV infection is common among pigs worldwide.

youdao