猪流感是由猪流感病毒引起的一种急性呼吸道传染病。
Swine flu is a respiratory disease affecting pigs that is caused by type a influenza virus.
猪流感是一种发生在猪身上的高度传染性急性呼吸道疾病，由A型流感病毒引起。
Swine influenza (swine flu) is an acute viral infection of the respiratory tract in pigs caused by type A influenza virus.
猪流感是由A型流感病毒引起的猪呼吸道传染病，病毒的定期爆发会引起猪患病。
It is a contagious respiratory disease of pigs caused by type a influenza viruses. Pigs are hit by regular outbreaks.
CDC的官方网站称，猪流感是由猪a型流感病毒所致的猪呼吸道疾病。
Swine flu is a respiratory disease of pigs caused by type a flu viruses, the CDC's Web site says.
猪流感是一种发生在猪身上的呼吸道传染病，由流感病毒引起，经常在猪群中爆发。
Swine flu is a respiratory disease of pigs caused by influenza viruses that causes regular outbreaks in pigs.
甲型H1N 1流感是一种由甲型h1n 1流感病毒引起的猪呼吸系统疾病，可在猪群中爆发。患者大多为与病猪有过直接接触的人。
Type a influenza H1N1 is an influenza a H1N1 influenza virus from pigs caused by respiratory illness outbreaks in swine herds. Most patients have had with direct contact with diseased people.
甲型H1N 1流感是一种由甲型h1n 1流感病毒引起的猪呼吸系统疾病，可在猪群中爆发。患者大多为与病猪有过直接接触的人。
Type a influenza H1N1 is an influenza a H1N1 influenza virus from pigs caused by respiratory illness outbreaks in swine herds. Most patients have had with direct contact with diseased people.
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