单词 | roll-about |
释义 | roll-about/ˈrəʊləbaʊt/adjective US. That can be moved on wheels or castors. noun A videoconferencing system in which the screen, camera, and associated equipment are on a single wheeled unit so they can be easily moved about. OriginEarly 19th century (in an earlier sense). From roll + about. |
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