a key on a typewriter or computer keyboard used to cause the carriage or cursor to move backwards (打字机或电脑键盘的)退格键
[mass noun]a device on a video recorder or camcorder which produces a slight backward run between shots to eliminate disturbance caused by the interruption of the scanning process (录像机或摄影机上的)反回装置
verb
[no obj.]move a typewriter carriage or computer cursor back one or more spaces 退格