and in plastering them together with mud. Some spiders build houses which could scarcely have been made except by some thinking creature.可知,鸟在寻找它可以用来筑巢的东西,在这样做的时候,它会思考.海狸们在建造水坝和房子的时候会思考,他们在获取材料的时候会思考,在安排材料的时...