In attempting to access teaching effectiveness, many evaluators mistakenly treat the analysis as one-dimensional, though the particular dimension chosen may take one of several modes.

在尝试访问教学效果，许多计算器错误地视为分析一维，虽然选择的特定维度可能需要几种方式之一。

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Sometimes the software mistakenly identifies an answer machine or voicemail, and terminates the call, even though it has been answered by a human being.

BBC: Silent calls: TalkTalk fined ?750,000 by Ofcom