Unverified50% confidenceFactExact time
自由软件基金会（FSF）定义的四项基本自由包括：运行程序的自由、研究和修改程序的自由、再分发的自由，以及分发修改版本的自由
1
Sources
50%
Confidence
Long-term
Relevance
8/16/2026
First Seen
Sources
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