单词	activated alumina
释义	activated alumina noun : a porous highly adsorptive alumina made usually by heating alumina hydrates and used chiefly in drying gases and liquids Word History First Known Use circa 1943, in the meaning defined above
随便看	ride-shares ride-sharing rideable rideau Rideau Canal rident rider rider keelson rider plate rider's bone ridered rideress riderless riders ridership riderships rides rides (out) rides herd on rides on rides on something or someone rides out rides up rideshare rideshares

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