乌云

• The sky writhed with clouds .
  天空里乌云滚滚。
• Look at those black clouds ; there is going to be a storm .
  瞧那些乌云，眼看要有暴风雨了。
• A terrific east wind swept away the groups of clouds .
  猛烈的东风扫除了盘据在天空里的乌云。
• The sky was overcast , the ligtning leaped from cloud to cloud .
  乌云盖顶，电光在云块间闪动。
• The sky had clouded over again and it was raining a little .
  天上又堆满了乌云，还下了一些雨。
• On the seventeenth, to all appearance, the cloud passed away again .
  十七日，乌云总算又吹散了。
• Dark clouds are gathering .
  乌云密布。
• The sky is overcast .
  乌云密布。
• It's a cloud .
  这是一阵乌云。
• Her colour came up, a heavy rage came over her like a dark cloud .
  一股怒火象乌云一般涌上心头。她满脸通红。