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A plastic sheet that can be colored on and then wiped clean.
一个塑料板。这是用来涂颜色的，并且容易擦拭干净。
youdao
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Start with a square sheet of paper, colored side down.
由一张正方形纸开始，颜色面向下。
youdao
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Start with a square sheet of paper, colored side down.
由一张正方形纸开始，颜色面向下。
youdao