sack cloud

• 囊状云

sack cloud的用法和样例：

例句

1. It is called a lenticular cloud, due to its lens-shaped appearance.
   它被称做荚状云，由于它成透镜样子。
2. Several clouds are stacked up into one striking lenticular cloud.
   进而导致成群的云系堆积成特殊的荚状云。