swine infuenza

例句：

1. 1.Swine influenza is a serious disease that can be transmitted from pigs to humans.
   猪流感是一种严重的疾病，可以从猪传播给人类。
2. 2. The outbreak of swine influenza has caused significant economic losses.
   猪流感的爆发已经造成了巨大的经济损失。
3. 3. Swine influenza vaccines are being developed to prevent the spread of this virus.
   正在开发猪流感疫苗来预防这种病毒的传播。