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Typical rule is "between" is for 2 items, while "among" is for 3 or more. But in this case, it's a little ambiguous given the context…would the clause be synonymous with "Rotating from asphalt to grass to photovoltaic cells…"?
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<div>Andrew Whitacre</div>
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<div>On Mar 4, 2014, at 3:23 PM, Scott R Campbell wrote:</div>
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This question has been posed to me and I don’t know the answer. Should the word in this sentence be ‘between’ or ‘among’?
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<div>Rotating between asphalt, grass and photovoltaic cells, spaces can dynamically shift from city street to park to energy source – on demand.</div>
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<div>‘Between’ sounds right to me but my questioner suggests that when there are more than three, ‘among’ is the right choice. What’s the rule here?</div>
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<div>It’s a caption for this image:</div>
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