劍橋詞典(the amount of) broadcasting time that someone or something, such as a piece of recorded music , has on the radio （唱片等在無線電臺的）播送時間（長度） Unless a song gets lots of airplay, it won't sell in the shops . 除非一首歌在電臺熱播，否則它在音像店就不可能暢銷。 比較airtime 返回 airplay