Stars twinkled like fireflies against the night sky.
Meaning: This sentence is comparing the twinkling of stars to the flashing of fireflies.
Choice of Words: Twinkled describes the way stars emit intermittent flashes of light. Fireflies are insects that produce light. When you compare stars to fireflies, you're creating an image of the stars appearing to blink or flash in the night sky, similar to the way fireflies produce intermittent light.
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