With the high temperatures, there must be sufficient cloud cover to keep any water on the surface from boiling.

由于温度较高，必须有足够的云彩才能防止星球表面的水分不会出现沸腾。

youdao

It was too late for a Friday attack and on Saturday there was excessive cloud cover.

如果是周五的话那就太晚了，而且当地周六会有大量云层覆盖。

youdao

The city light patterns are very clear, indicating that there was little cloud cover or haze in the region at the time.

而城市的光圈非常清晰，表示当时这块区域上空较少阴霾和云层。

youdao

Instead of scheduling a plane, which could take longer owing to the time required to make arrangements with the local airport, drones would be lower-cost and able to operate even if there was cloud cover, he said.

WSJ: Farmers Experiment With Drones

It was too late for a Friday attack, and on Saturday there was excessive cloud cover.

NEWYORKER: Getting Bin Laden

These systems must be smart enough to independently switch back and forth from solar when the sun is out to fuel at night or when there is heavy cloud cover.

ENGADGET: Marines eye solar energy to eliminate dependency on fuel generators (video)