To create the butterfly, cut wing shapes from pattern paper.

从花纹纸上，裁剪出双翅形状，蝴蝶的主要轮廓就出来了。

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That evidence does not have to meet any kind of scientific test: pretty much any pattern of ink on paper will do the job.

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That's because the lines in the notebook are printed using a unique dot pattern that helps Evernote identify the paper's exact dimensions and hue, so it can optimize contrast and correct skew.

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"My opinion is that the imprint pattern on the back of the envelope and also on the piece of paper could have been caused by the jeans, " said Deedrick.

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