cloud coverage

例句：

1. 1. The clouds were so thick that they obscured the moonlight.
   云层很厚，遮住了月光。
2. 2. The weather forecast indicated a high chance of rain with cloud coverage.
   天气预报显示有很高的几率会下雨，云层密集。
3. 3.The pilot had to circle around because of the heavy cloud coverage.
   飞行员因为厚厚的云层不得不绕圈飞行。