Prof Roger Wotton found that flight would be impossible for angels portrayed with arms and bird-like feathered wings.

Roger Wotton教授发现，被描绘成拥有手臂和羽毛翅膀的天使其实是飞不起来的。

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Prof Roger Wotton, from University College London, found that flight would be impossible for angels portrayed with arms and feathered wings.

伦敦大学学院教授罗格·沃顿认为，艺术作品中所描绘的那些长有胳膊和羽翼的天使，根本就不可能飞得起来。

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