airplay
noun [ U ] uk/ˈeə.pleɪ/ us/ˈer.pleɪ/
（唱片等在无线电台的）播送时间（长度）
(the amount of) broadcasting time that someone or something, such as a piece of recorded music, has on the radio
Unless a song gets lots of airplay, it won't sell in the shops. 除非一首歌在电台热播，否则它在音像店就不可能畅销。
Compare: airtime