单词	e-textbooks
释义	e-textbooks 电子教材
随便看	automatic rifles automatic right automatic rigid pvc pipe making machine Automatic Ringback Facility automatic ringdown automatic ringing automatic ring rolling machine automatic ring trip automatic rinser automatic rirle automatic rivet gun automatic riveting automatic riveting fixture automatic rivets button fastening machine automatic roadbuilder automatic roasting furnace automatic roasting machine automatic robot automatic robots automatic rocket impact predictor automatic rocket launcher automatic rod automatic rod drop automatic rod holder automatic rod lifter