他们已经为Giving Pledge（由盖茨和巴菲特联合创办的主要面向富豪的慈善组织）签约了三十余位慈善家，包括甲骨文公司CEO拉里埃尔森和微软创始人之一的保罗艾伦。

They've signed up more than 30 philanthropists, including Oracle Corp. Chief Executive Officer Larry Ellison and Paul Allen, co-founder of Microsoft, to their Giving Pledge initiative.

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