無法解壓縮(用了不明的壓縮方法?)
http://wiki.moztw.org/index.php?title=Search_Plugins

Why can't 7-Zip open some ZIP archives?

In 99% of these cases it means that the archive contains incorrect headers. ZIP archives contain two copies of headers. 7-Zip reads both copies and won't open archives with incorrect data in the headers. Other ZIP programs can open some archives with incorrect headers, since these programs usually read only one copy of the headers, or they just ignore errors.

If you have such archive, please don't call the 7-Zip developers about it. Instead try to find the program that was used to create the archive and inform the developers of that program that their software is not ZIP-compatible.

There is now also an extension to the ZIP format for strong encryption (AES) support. 7-Zip still doesn't support this. It will be implemented later.