play something back
phrasal verb with play verb uk/pleɪ/ us/pleɪ/
放，播放，放送（录音或录像）
If you play back something that has been recorded, you put it through a machine so that you can listen to it or watch it.
The message I recorded for the answering machine sounded terrible when I played it back. 我为电话答录机录制的留言播放出来后听起来糟糕透了。