RAR 转 ZIP
把文件从 RAR 里解放出来，重新打包成任何系统开箱即用就能打开的 ZIP。
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RAR
A proprietary archive format from WinRAR. Widely shared online, but many systems need a special app to open it.
ZIP
The universal archive format. Bundles files and folders into one compressed file that opens on any system without extra software.