由于降水取决于云滴相互碰撞并凝聚成更大更重的水滴，海洋云层中若存在大量的微粒还会推迟降水的发生。

In Marine layer clouds, an abundance of small particles may also delay the onset of precipitation, which depends on cloud droplets colliding and coalescing into larger, heavier drops.

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如果这颗行星有跟我们一样的大气层，就需要覆盖大约50%的云层来保持它足够凉，这样液态水才能在行星的表面存在。

If the planet has an atmosphere like ours, it would need about 50 percent cloud cover to stay cool enough for liquid water to exist on the surface.

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在多星联合调度过程中，存在着很多不确定性因素，其中云层覆盖变化是主要的不确定性来源。

The possible presence of clouds is the main origin of uncertainty in the multi satellites joint scheduling problem.

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