Final answer:
The author uses the simile "time slipped forward like flowing water" to convey the idea of smooth and continuous passage of time.
Step-by-step explanation:
The author uses the simile "time slipped forward like flowing water" to convey the idea that time was passing smoothly and continuously, just like the flow of water in a river. This simile creates a sense of fluidity and motion, suggesting that time was moving effortlessly.
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