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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There were 46 consumer complaints about dark material in the liquid products between June 2009 and April 2010, according to the FDA report.

在2009年6月至2010年4月之间，FDA报告说有46位患者投诉在液体药品中发现了不明黑色污染物。

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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