The reason is to find that the online translation website can't pronounce it.
F12 called up the console, and found that the mp3 file could not be decoded.
Try to install the deadbeef package and find that there is a package named ffmpeg in the list of recommended software to install after installation. After installation, restart firefox. All right.
I remember that in the Windows 7 ultimate N version installed at the time, firefox couldn't play the translation either, so I should just install the media center.