And companies like NBCUniversal and even Disney (DIS) have begun to dip their toes into the online learning business.

此外，NBC环球(NBCUniversal)、甚至迪斯尼(Disney)等公司也开始涉足在线学习领域。

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Disney ( DIS - news - people ), and now the once insignificant sports network is generally considered Disney's most valuable property.

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And so in 2012 Comcast shares rose 58%, while those of ESPN owner Walt Disney (DIS) jumped 33%.

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Other competitors in the services sector include: Walt Disney (DIS), News Corp. (NWSA), and CBS (CBS).

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