This kind of dark material will highlight the brightness of your complexion.

这种深色面料，能衬托您皮肤的明亮光彩。

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In the centre of the image, the floor of an impact crater almost 50 km wide is covered in dark material.

在图像的中心，一个陨石坑地面将近50公里宽覆盖着黑色的物质。

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This image of Saturn's moon shows evidence for the emerging view that Phoebe may be an ice-rich body coated with a thin layer of dark material.

这幅由土星火箭拍摄的月亮图片为近来崭露头角的一种观点——月亮含有丰富的冰而且其表面覆盖着厚厚一层黑色物质——找到了证据。

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Compost is a dark, rich material added to soil to improve it.

VOA: special.2009.06.23

Odd patches of bright and dark material that scientists have yet to identify also appear on its surface.

WSJ: Asteroid Vesta Gets a Close Study

In these areas, the water appears to be covered by a dark material that the researchers suspect might be complex organic molecules.

FORBES: NASA Has Discovered Water Ice On Mercury

But further measurements using a laser and looking for reflections showed that much of the ice is covered with a layer of dark material tens of centimetres thick.

BBC: Mercury's water ice at north pole finally proven