| 释义 |
off-ˈair, a. and adv.
[off- 4 b, off prep. + air n.1]
A. adj.
a. Operating on a closed circuit; not involving the broadcasting of programmes.
1961Times 2 June 14/6 (Advt.), The ship of the year..relies on Marconi Marine..for closed circuit television. A completely co-ordinated internal and ‘off-air’ television system—..providing passengers with closed circuit telecine and live television programmes.
b. Involving the transmission of programmes by broadcasting.
1971Morning Star 10 Dec. 4/1 An attempt to prevent the allocation to ITV of Britain's last off-air television channel. 1975ITV Evidence to Annan Committee i. 30 The cable companies are eager..to deliver programmes into homes by cable rather than from off-air transmission by the IBA and the BBC. 1977Rep. Comm. Future of Broadcasting (Cmnd. 6753) xiv. 218 The Cable Television Association..saw no reason why those who currently contribute to off-air television should not also participate in programme making for cable television.
c. Carried out or done from received broadcast transmissions.
1973B.B.C. Handbk. 1974 45/2 The off-air recording of educational programmes by educational institutions is another problem. 1980Amat. Photographer 15 Mar. 119 (caption) Transferring film to video tape... Tuner/timer (for ‘off-air’ recording).
B. adv. From broadcast transmissions.
1974Author Winter 149 A video cassette player/recorder..will..record off-air (you can record BBC 1 while watching ITV or BBC 2). 1975ITV Evidence to Annan Committee i. 31 The cable companies, if they are to offer anything more than is already available off-air, will be forced to provide a menu of feature films and big sporting occasions. 1977Gramophone June 124/1 The BBC's Matrix H tapes (including one recorded ‘off-air’) were as good a compromise as I have heard. |