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禽流感病毒难以像天花那样绝迹人们在水边欣赏羽毛漂亮的各种水鸟时,也许不曾想到,下一次禽流感将由它们引发。
The bird flu virus is difficult to extinguish like a smallpox. People may not think that the next bird flu will be caused when people appreciate the beautiful waterbirds at the water’s edge.