Water on the land surface appears in shades of dull green, and a temporary river runs north-south through the image.

陆地表面的水流呈现暗绿的阴影，一条临时出现的河流自北向南纵贯图片。

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The oil slick appeared as a tangle of dull gray on the ocean surface, made visible to the satellite sensor by the sun's reflection on the ocean surface.

浮油区在海面上呈现为一团暗灰色，因为海面对太阳光的反射才使卫星传感器能够发现它。

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With the expansion of host range, surface of fish becomes dull, mucus secretion increase more, and the fish become weaker due to loss of appetite.

随着寄生范围的扩大，体表失去光泽，粘液分泌量增多，鱼因食欲减退而变得虚弱。

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On the surface, Millat seems like a pretty dull story: With all of the news coming out of Pakistan, I flew for 26 hours to report on a publicly-traded tractor company.

FORBES: Yes, Virginia. There Really Is Some Good News In Pakistan.

It looked like just another dull piece of basalt, so much of which litters the Martian surface.

BBC: Cosmic coincidence on the road to Glenelg