cirrus: thin wisps of ice-crystal cloud at high altitudes卷云:高海拔地区的薄层的冰晶云。
2/10cirrostratus: a high-altitude, thin layer of ice-crystal cloud, formed from the spreading out of cirrus. Often shows some fibrous structure.卷层云:高空、薄层的水晶云,由卷云的扩散形成。通常展示出了一些纤维结构。
310cirrocumulus: a high-altitude layer of tiny heaps of ice-crystal cloud with no shading and clear gaps between the cloudlets.卷积云:高空的小堆的冰晶云,云朵之间没有阴影和明显的缝隙。
4/10altostratus: a middle-altitude layer of essentially featureless, white or grey cloud.高层云:中层本质上毫无特色,是白色或灰色的云。
5/10altocumulus: a middle altitude layer of moderate-sized heaps of cloud, with distinct shading and clear gaps between the cloudlets.高积云:中层云,中等程度堆状云,云朵之间有明显的阴影和缝隙。
6/10nimbostratus: a dense layer of cloud at middle levels, often extending down close to the surface. Often with a ragged base, and always producing prolonged rain.雨层云:密集的中层云,密度均匀。云底较乱,通常呈现不规则形,通常产生长时间的降雨。
7/10stratocumulus: a widespread layer of heaps or rolls of cloud at a low level, with distinct gaps and heavy shading.层积云:堆状或卷状的低层云,有明显的缝隙和较重的阴影。
8/10stratus: an essentially featureless, grey layer of cloud at low level. At ground level, it is mist or fog.层云:这种云本质上毫无特色,灰色的低层云。在地平面时,它是薄雾或浓雾状。
9/10cumulus: the most familiar cloud. Rounded heaps of white cloud at low levels, generally an indication of currently fine weather.积云:最常见的云。白色的圆堆状低层云,一般是好天气的预兆。
10/10cumulonimbus: the giant among clouds, that may tower through all three levels, sometimes with a flattened top . The shower cloud with dark, ragged base and heavy, localized rain, hail, or other severe weather.积雨云:云体庞大,呈塔状,云体有时可以跨越三个云层,顶部也可呈扁平状。这种阵雨云的底部阴暗不规则,常带来大型降雨,局部降雨,冰雹或者其他恶劣的天气状况。