Clouds drifted slowly, covering sky.
Meaning: Visible masses of tiny water droplets or ice crystals moved slowly and smoothly, putting themselves over the region of the atmosphere above the earth.
Choice of Words: A cloud is a visible mass of tiny water droplets or ice crystals suspended in the atmosphere. Drifted means to move slowly and smoothly. Slowly means in a slow manner. Covering means to put something over something else. Sky is the region of the atmosphere above the earth.
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Related Expressions