id	keyword
fbem-24769	project
fbem-24769	cost
fbem-24769	ppp
fbem-24769	construction
fbem-24769	model
fbem-24769	benefit
fbem-24769	traffic
fbem-24769	yuan
fbem-24769	road
fbem-24769	ppp model
fbem-24769	analysis
fbem-24769	vehicle
fbem-24769	evaluation
fbem-24769	time
fbem-24769	price
fbem-24769	table