A lack of access to Cuba,says GAO, has made it difficult to obtain nationally representative data on audience size, and decision-makers have had limited information to assess the relative success or return on investment for each transmission method.

VOA: standard.2009.06.18

Well, we don't have much oil relative to the size of our portfolio.

考虑到资产总额的话,我们其实持有的石油其实不多。

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