一种流行的方式是向开源的核心程序出售专利的扩展功能。
A popular approach is to sell proprietary extensions to an open-source core.
微软出售专利之举是其应对Linux的行动中的一个新插曲。
Microsoft's sale of the patents is a new twist in its approach to Linux.
即使很快达成出售专利的协议，任何交易都可能需要数月时间才能完成。
Even if an agreement is reached to sell the patents soon, it could take months for any deal to close.
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