id	keyword
ajst-29289	risk
ajst-29289	disaster
ajst-29289	district
ajst-29289	urban
ajst-29289	zhengzhou
ajst-29289	flood
ajst-29289	waterlogging
ajst-29289	evaluation
ajst-29289	city
ajst-29289	prevention
ajst-29289	weight
ajst-29289	area
ajst-29289	level