blue tongue disease的用法和样例：
例句
- Once an area is infected with bluetongue, the disease is even harder to eradicate than foot-and-mouth.
一旦蓝舌病疫情在某地区爆发，这种病毒甚至比口蹄疫更难根除。 - Yet bluetongue, in the long run, may prove a bigger irritant than foot-and-mouth.Of African origin, the disease has been spreading around the world for decades.
然而从长远的角度而言，相比口蹄疫，蓝舌病可是一个更大的刺激。
