And as you can see from these maps of London, in the 90 years after the trains came, it goes from being a little blob that was quite easy to feed by animals coming in on foot, and so on, to a large splurge, that would be very, very difficult to feed with anybody on foot, either animals or people.
你可以看看伦敦的地图 在铁路建成后的90年 它从容易喂饱的一小点 通过动物步行到市场等方式 成长成为大型的奢侈的大都市 步行运输再也不能喂饱每个人 不论是对人还是对动物