7zip说无法打开文件作为存档时该怎么办？
this means that your archive file has just encountered an error. you can try fixing it using a hex editor or third-party software. if this doesn’t work, you can try re-downloading the archive file from its source or change the flash drive that you are using to save it.
the process is easy. click and read this page to get the whole process of downloading 7zip.