Solid data about the blogosphere are hard to come by.
有关博客世界的可靠数据又不容易得到。
Factual data: Do you use any solid data and facts to build your credibility?
事实数据:你有没有运用确凿的数据和事实来建立你的可信度?
Without real metrics derived from solid data, you do not have a baseline to work from.
没有从可靠的数据导出的度量,你就没有工作的基线。
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