词汇	degraded hilly area
释义	degraded hilly area 退化山地
随便看	dual functional dual functional catalyst dual functional pressure relieve valve Dual functional teachers dual function approximation dualfunction catalyst dual function catalyst dual-function catalyst dual-function cationic amino acid transporter Dual-function cylinder Dual function design saves money and space Dual-function of AFPs Dual function of capital dual function of concept dual functions dual-functions dual-function teachers dual functor dual fund dualfurnace cracking dual furnace cracking dualfurnace cracking unit dual furnace cracking unit dual-furnace cracking unit dualfurnace thermal cracking