1.
Dark and dusty painted on the sky
黑雾浓云，抹在空中，
2.
On both sides of the road tall chimneys belched black smoke, and crowds of people in work clothes spilled on to the road.
两侧高耸的烟囱吐着团团浓云，路上拥挤着穿工作服的人群。
3.
The sky is not described as heavily overcast, but rather sort of hazy, so that it's a uniform color.
书里并没有说天空浓云密布，只是有点烟雾弥漫，天空浑然一色。
4.
thick fog, mist, cloud
浓雾、 重雾、 密云
5.
Observations do not indicate that cloud nucleus concentrations parallel those of sulphur dioxide.
观测没有表明云核浓度与二氧化硫浓度相关。
6.
The clouds come over so low here, they seem to touch the ground; sometimes they envelop the herds before they dissolve into a sprinkle of rain.
牧群在雨云中出没，加浓了云意，很难分辨出哪是云头哪是牧群。
7.
Dense clouds of ash were generated during the volcanic eruption.
火山爆发时, 产生了浓密的火山灰云。
8.
Determination for minimum explosive concentration of dust cloud
GB/T16425-1996粉尘云爆炸下限浓度测定方法
9.
Her robe is a cloud, her face a flower. Her balcony, glimmering with the bright spring dew.
云想衣裳花想容， 春风拂槛露华浓。
10.
The pilot lost his way in thick weather.
飞行员在浓密的云雾中迷失了方向。
11.
It was almost black, dotted with ugly leaden rain clouds.
天上几乎已是一片乌黑，布满了一团团怕人的浓浓的积雨云。
12.
We could find a significant effect on CCN concentrationwhen the aerosol distribution is different.
气溶胶总浓度和谱分布特征明显影响着云凝结核浓度。
13.
storm-cloud (large black cloud coming with a storm or indicating that a storm is likely to happen )
暴风云（暴风雨时出现的或预示暴风雨将至的浓密的乌云）.
14.
It is legitimate to envisage a more or less one-to-one correspondence between cloud nucleus concentration and the concentration of cloud droplets.
拟想云核浓度与云滴浓度之间有或多或少的一一对应关系是合理的。
15.
Baiyunbian Liquor is the typical representative of Maotai-Luzhou-flavor liquor.
白云边酒是浓酱兼香型白酒的典型代表。
16.
Present situation and prospect of Yunnan provinces high-analysis phosphate & compound fertilizer and sulphuric acid industries;
云南省高浓度磷复肥与硫酸工业的现状与发展
17.
Now it is a vast ocean of radiant clouds, now it is a boundless expanse of swirling mist and fog.
一会儿是万顷银光的云海，一会儿又是一片迷蒙的浓雾。
18.
The dense fog clouds associated with the handling or transfer of cryogenic liquids can obstruct visibility.
同低温液体的操作或转移相关的浓密雾云会影响可见度。