Ducks swim fast.
Meaning: This sentence describes how ducks can move quickly through water. It's a way to highlight their natural ability to swim efficiently.
Choice of Words: Ducks are water birds that are known for their ability to swim. Swim is the action that ducks take in water, moving their bodies and feet to move through the water. Fast is an adjective that describes the speed at which something is moving. So, "Ducks swim fast" means that ducks move quickly through water.
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