When learning about Scotch whisky appellations.
We'll find a small region called Campbeltown.
It was once the whisky centre of the world.
But why are there only two companies（three whisky distilleries)...
学习苏格兰威士忌产区的时候，
我们会发现一个叫Campbeltown的小产区
居然号称曾经的世界威士忌中心
但为何只有两家公司（三家威士忌厂）...