N-COUNT 主打歌曲；打榜歌曲；（唱片）包含主打歌曲的一面 The A-side of a record that has been released as a single is the main song on it. You can also refer to the side of the record that contains this song as the A-side . 主打歌曲；打榜歌曲；（唱片）包含主打歌曲的一面