The artist dusted the charcoal drawing down to a faint image.

这位画家在素描上撒粉使其变为暗淡的图像。

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Look for a faint image of Andrew jackson in the lower right corner.

在右下角看到一个浅浅的头像么。

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The curvature of the Earth’s horizon (the limb) is clearly visible, as is the faint blue line of the upper atmosphere directly above it (at image top center).

地球地平线的曲线（周边）清晰可见，它的正上方隐约显现出高层大气的蓝线（图片中上部）。

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