In a trench dug by a University of South Florida Coastal Research Lab team, layers of oil-stained sand light up orange under ultraviolet light. Clean sand appears violet.
南佛罗里达大学海岸研究实验室的团队挖掘的一条地沟，沾了油污的沙子在紫外线下为橙色，而干净的沙子为紫色。
After I climbed on to the sand dune in the light rain and gusty wind, the rain stopped and sun peeked out.
在细雨和刮风中，我爬上了沙丘，之后，雨停了，而且太阳悄悄地露出来了。
The rippling, variegated strips of green light and blue shade may be replaced with deep purples, pale pinks, a grey dark as pewter or a greenish beige, like sand.
那绿色的光线还有那蓝色的阴影在荡漾着，形成斑驳的条纹，这些条纹也许有时候会变成深紫色，或浅桃红色，或像白蜡般的暗黑色，或带绿的米黄色，就像海边的沙滩一样。
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