雅虎和TripAdvisor不愿透露新协议的详情。这份协议在1月1日生效，只针对美国市场，并采取了收入分成的模式。

Yahoo and TripAdvisor wouldn't release details of the new agreement, which began Jan. 1, other than to say that it involves the U.S. market only, and is a revenue-sharing arrangement.

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请另用A 4大小的纸张说明预计收入来源详情，以及如何用于减低活动成本。

Please provide details of sources of income and how the income will be used to defray cost on a separate sheet of A4 size paper.

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