Continue with your sketch using only the black or dark colors.

与您的素描继续只使用黑色或深色的颜色。

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You can reduce image size by using less colors.

通过减少图片颜色，缩减图片尺寸。

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You can reduce image size by using less colors.

通过减少图片颜色，缩减图片尺寸。

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