We see that with the phenomenon of raising backyard hens and chickens and ducks. And when you work out the math, they say it doesn't work, but the principle is there that it's about being sustainable and taking care of yourself.
我们看到他们在后院饲养 母鸡、小鸡和鸭子,当你计算经济成本时， 他们回答那不重要,重点是原则， 原则就是关于持续发展和自给自足。