mammato-cumulus

例句：

1. 1. The mammato-cumulus clouds were a sign of the approaching rain.
   微云预示着即将下雨。
2. 2. The meteorologist observed that the mammato-cumulus layer was moving inland.
   气象学家观察到微云层正在向内陆移动。
3. 3. The farmer noticed the mammato-cumulus clouds and knew it was time to bring in theharvest.
   农民注意到了微云层，知道是收获的时候了。