-
Swine flu, H5N1 avian influenza and in fact all influenza viruses are believed to have originated in animals.
据称,猪流感,H5N1禽流感和所有流感病毒都起源于动物。
youdao
-
Swine flu, H5N1 avian influenza and in fact all influenza viruses are believed to have originated in animals.
据称,猪流感,H5N1禽流感和所有流感病毒都起源于动物。
youdao