Blue skies exist.
Meaning: This means that the sky, which appears blue to us, is real and can be seen above us. It's like saying, The blue-colored space above us is not imaginary.
Choice of Words: Blue is an adjective describing the color of the sky. Skies is the plural form of sky, referring to the vast expanse above us. Exist is a verb meaning to have real being.
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Related Expressions