ZIP 转 7Z
把 ZIP 重新打包成 7Z，借助更强的压缩算法，同样的文件能装进更小的压缩包。
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ZIP
The universal archive format. Bundles files and folders into one compressed file that opens on any system without extra software.
7Z
The 7-Zip archive format, known for strong compression that often beats ZIP. Best opened with 7-Zip or a compatible app.