天空灰暗多云。
Sometimes cloudy sky may deter a man from undertaking a journey.
阴暗天色有时使人不敢启程。
The cloudy sky was followed by rain.
天空乌云密布，接着下起雨来。
In that cloudy sky only one lone star could be seen.
在那多云的天空中，只能看见孤零零的一颗星。
In that cloudy sky only one lone star can be seen.
的天上，只能看到孤零零的一颗星星。
Only a tiny patch of blue was visible in the cloudy sky.
多云的天空中只见到一小块儿湛蓝。 。
The clear and the cloudy sky are studied in this paper, respectively.
本文针对晴空天空背景以及有云天空背景分别展开研究。
Albert: look at the dark, cloudy sky! It looks like more rain. Maybe even sleet or snow.
艾伯特：看看那乌云密布的阴天！好像还要再下更多的雨。也许还会下雨夹雪或雪。
Albert: : look at the dark, cloudy sky! It looks like more rain. Maybe even sleet or snow.
艾伯特：看看那乌云密布的阴天！好像还要再下更多的雨。也许还会下雨夹雪或雪。
Serial cloudy sky and cold wave in cold half year brings about a greater impact on the quality and yield of vegetable.
冬半年经常发生连阴天气和寒潮天气，严重影响了蔬菜的质量和产量。
Flashes of lightning lit up the dark, cloudy sky, whose uniform leaden gloom HAD by now broken up into patches of black and grey.
闪电瞥过长空，照见满天的乌云现在不复是墨灰的一片，而是分了浓淡。
The 3-d cloud of the cloudy sky is created through the particle system, and its radiation is obtained by grey body approximation.
位于空中的三维云团则采用粒子系统生成，并用灰体近似的方法得到其红外辐射值。
Then take the cloudy sky, set that layer on top of the just-color sky, and lower the opacity so that the clouds read much lighter.
然后，找来有云的天空设置在只有颜色的天空图层的顶层，并降低透明度，这样云就会变淡。
This thesis gives a thorough research of infrared cloudy sky images often seen as backgrounds of remote sensing images and sets up the corresponding models.
本文对作为常见遥感图像背景存在的云背景红外天空图像的统计特性进行了深入的研究，并对它们建立了相应的模型。
In this paper, the relation of cloudy sky luminance with particle scatter and air mass is discussed by using the results of atmospheric and geometrical optics.
利用大气光学和几何光学的成果，讨论了阴天天空亮度与粒子散射和大气质量的关系，从微观机理上说明了阴天空最大亮度元的存在性，并得到了有趣的结果。
On February, 25, 2014, with the spring breeze blowing in Beijing, the haze clocking Beijing was cleared away and the grey and cloudy sky turned into clear blue.
2014年2月25日，阵阵春风吹拂下的北京一扫连日以来的雾霾，灰蒙阴沉的天空再现久违的湛蓝如洗。
Cloudy sky drove the bathers off the beach.
阴霾的天空把海滩上的游客都赶跑了。
Cloudy sky drove the bathers off the beach.
阴霾的天空把海滩上的游客都赶跑了。
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