This is why the goods and services that a place can sell to non-residents have a disproportionate impact on its quality of life – and even its viability. A mining town becomes a ghost town when the mine closes, because the grocery store, the pharmacy, and the movie theater no longer have the capacity to buy the “imported” food, medicine, and films they need.
当然，外地人有权从别处进口。这解释了为什么卖给非居民的商品和服务能对生活质量产生重大影响，甚至影响到生活的可持续程度。矿山关闭会导致一座采矿小镇变为鬼城，因为杂货铺、药店和电影院不再具有购买“进口”食品、药品和电影的能力。