play back

1.A cassette tape recorder can easily record sound on and play sound back from tape.

盒式录音机可以很容易地录音和放音。

2.When I play back the text, please listen carefully to see whether there are any mispronunciations in it.

我放课文录音时请仔细着, 看里面有没有发音错误。

3.To record, press these two buttons together; then rewind, and then press the red button to play back.

要录音就按下这两个键, 而后倒回, 按下这个红键播放。