Icebergs are ordinarily blue to white, although they sometimes appear dark or opaque because they carry gravel and bits of rock.
冰山一般是蓝色到白色，尽管有时因为携带了砾石和小岩石而变成黑色或者不透明。
If we could see infrared, the sky would appear dark, and grass and trees very bright.
如果我们能看见红外线，天空会看起来颜色暗淡，而绿草和树木则会非常明亮。
Lighted by a normal flashlight, tar patties appear dark brown against the sands of Pensacola Beach, Florida.
佛罗里达的彭萨科拉沙滩上，在常规手电筒照射下，油块呈现深棕色。
Although very hot, prominences typically appear dark when viewed against the Sun, since they are slightly cooler than the surface.
虽然很热，日珥典型表现是在太阳的衬托下显得较暗，因为它们比太阳表面稍冷一些。
Some clues suggest it could be buried but affecting the surface to make it appear dark.
有证据表明，水流有可能存在于地表之下，并且使得地表面的颜色变深。
An image in which the light areas of the object rendered appear dark and the dark areas appear light.
底片像：一种映像，在里面物体的有光的部分显示出暗色，而阴暗的部位显示出光亮。
An image in which the light areas of the object rendered appear dark and the dark areas appear light.
底片像一种映像，在里面物体的有光的部分显示出暗色，而阴暗的部位显示出光亮。
An image in which the light areas of the object rendered appear dark and the dark areas appear light.
底片像一种映像，在里面物体的有光的部分显示出暗色，而阴暗的部位显示出光亮。
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