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on-air

adjective
🔊/ˌɒn ˈeə(r)/
🔊/ˌɑːn ˈer/
 Idioms
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  1. (in radio and television用于广播及电视) being broadcast正在播放
    • She explains how she deals with on-air technical problems.她解释了她是如何处理播放中的技术问题的。🔊🔊
    opposite off-airTopics TV, radio and newsc2
    Oxford Collocations DictionaryOn-air is used with these nouns:
    • personality
    • promotion
    See full entry
Idioms
on/off (the) air
  1. broadcasting or not broadcasting on television or radio（电视、广播）正在／停止播送
    • We will be back on air tomorrow morning at 7.明天早上 7 点本节目再见。🔊🔊
    • The programme was taken off the air over the summer.这个节目在夏季停播。🔊🔊
    Topics TV, radio and newsc2