In this paper, the contrast error of this technique is studied, and four basic error-forms are discussed.

对该技术衬度误差的形成机理及形式进行了分析研究，并给出了四种基本误差形式。

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In contrast, if he infers that she is not interested when she is in fact interested, then he has made an error of false negative (what the statisticians call the "Type II" error).

相反，如果他推断，她不感兴趣，而实际上她感兴趣，那么他犯了假阴性的错误(统计学家称为“第二类”错误)。

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However, make sure that the portlet's background color has enough contrast with red, and make sure that you can still tell that it is an error message if it is not highlighted in red.

不过，请确保portlet的背景色与红色具有足够的对比度，并确保如果没有用红色突出显示出错消息，您仍可以分辨出它。

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His error count was a stark contrast to his performance in his debut season last year, when he was virtually flawless until letting the title slip through his fingers in the final two races.

BBC: Hamilton in McLaren career pledge

Mr. Obama, by contrast, appears to consider himself immune from error.

WSJ: Stephens: Is Obama Smart?