1.Mammatus clouds, meaning "breast clouds" , are associated with strong storms. . .
乳状云，顾名思义就是乳房般的云彩，它通常与猛烈的风暴联系在一起
2.An array of colors and mammatus clouds fill the sky as storms skirt around Fort Smith, Arkansas, on April 22
月22日，暴风雨临近，美国阿肯色州史密斯堡的天空中出现的云彩。