The bird flu outbreak in US cattle has put governments on high alert as they grapple with its potential to contaminate meat and dairy supplies, infect other mammals and transmit to humans.
美国牛群中的禽流感爆发已使各国政府进入高度警戒状态，他们正在努力应对其可能污染肉类和乳制品供应、感染其他哺乳动物并传播给人类的潜在风险。
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