-
必须记住，人类历史上很多严重的传染病均起源于动物。
Many serious infections in human history have originated in animals.
youdao
-
口蹄疫是最重要的动物传染病。
Foot and mouth disease is the most important animal epidemic disease.
youdao
-
口蹄疫是最重要的动物传染病。
Foot and mouth disease is the most important animal epidemic disease.
youdao