duck plague

例句：

1. 1. The ducks were suffering from the duck plague.
   鸭子们正遭受鸭疫的折磨。
2. 2.The duck plague has been a major concern for farmers in recent years.
   鸭疫近年来一直是农民们的一大担忧。
3. 3.The duck plague is often caused by a virus that affects waterfowl.
   鸭疫通常由一种影响水禽的病毒引起。