天空灰暗多云。
Now even the cloudy yellow leaves are all fallen, the rest of the grey sky a thorough loneliness, you can listen to the monologue of the cold?
现在连秋云黄叶又已失落去辽远里，剩下灰色的长空一片透彻的寂寞，你忍听冷风独语？
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。
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。
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。
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