The bird flew swiftly across the sky.
Meaning: The bird moved through the air using its wings with great speed from one side to the other of the expanse of air and space seen above the Earth.
Choice of Words: Flew means to move through the air using wings. Swiftly means with great speed. Across is a preposition that means from one side to the other. Sky is the expanse of air and space seen above the Earth.
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Related Expressions