But you have to produce food. And when you are unable to sell that commodity or trade with that commodity, number one if the national investment all have been eroded, the environmental resources are all lost.

即便如此也还是得继续生产粮食。而当生产出来的商品无法进行出售或者贸易的时候，国家投资就最先被全部侵蚀掉，环境资源也因此都被浪费了。