Normally, you would need to convert the MP3 file to an editable audio format, like AIFF or Wave, edit the file, save it and then re-encode to MP3 again.

• 通常情况下，您将需要转换的MP3文件的编辑音频格式，如AIFF或波，编辑该文件，将它保存，然后重新编码成MP3。