/tju:n; US tu:n ||; tun/verb1 [T] to make small changes to the sound a musical instrument makes so that it is at the correct musical level(pitch) 调音: to tune a piano/guitar 为钢琴╱吉他调音
2 [T] to make small changes to an engine so that it runs well 调校(发动机)
3 [T] (usually passive 通常用于被动语态) tune sth (in) (to sth) to move the controls on a radio or television so that you can receive a particular station 将(收音机或电视机)调谐或调到(某台): The radio was tuned (in) to the BBC World Service. 收音机被调至BBC国际台。 (spoken 口语) Stay tuned for the latest news. 请继续收听本台最新新闻报道。
tune in (to sth) to listen to a radio programme or watch a television programme 收听(电台节目);收看(电视节目)
tune (sth) up to make small changes to a group of musical instruments so that they sound pleasant when played together 调校乐器使合调