id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
cet-12745		cet-12745		6	.pdf	application/pdf	2799	121	55	Waste classification can greatly improve the efficiency of waste treatment and ensure the healthy development of cities. In the cost of waste treatment, the cost of the collection and transportation accounts for a considerable proportion.	cache/cet-12745.pdf	txt/cet-12745.txt