off-air
Longman Dictionary of Contemporary English 5++LDOCE 5++ˌoff-ˈair adjective [only before noun] not being broadcast on the radio or television at the present moment 非直播的 OPP on air, on-air off-air television recordings 非直播的电视录像
Examples from the Corpus
off-air• This is one example of a task related to an extract from off-air documentary material within a unit on drugs.• The treatment of off-air material outlined in Video Plans 14 and 15 could form the basis for discussion of this kind.• In some cases a single aerial serves a block of flats or a valley area where off-air reception is poor.• However you will need to find out about the laws governing off-air recording in the country you are in.ˌoff-ˈair adjectiveChineseSyllable
or being on Corpus not radio the broadcast
off-air
ˌoff-ˈair
adjective [only before noun]
not being broadcast on the radio or television at the present moment
OPP on air, on-air:
off-air television recordings
ˌoff-ˈair
adjective [only before noun]not being broadcast on the radio or television at the present moment
OPP on air, on-air: