border disease
柯林斯詞典
1. N a congenital infectious disease of sheep and goats caused by a Togavirus and characterized by abortion, infertility, and deformity of lambs 邊界病; 綿羊或山羊的一種先天性傳染病，由囊膜病毒引發(fā)，該病有流產(chǎn)、不育、羔羊畸形等特征[vet science]
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