龙形象(xiàng )的多变性(xìng ),主要缘于龙的幻(huàn )想属性。商周时期龙的形象尚未固定。《管子·水地》称龙“欲小(xiǎo )则化如蚕蠋,欲大则藏于天(tiān )下,欲尚则凌于(yú )云气(qì ),欲(yù )下则入于深泉,变化无(wú )日,上(shàng )下无时。”《说(shuō )文·龙部》也云“龙,鳞虫(chóng )之长,能幽(yōu )能明,能细能(néng )巨,能(néng )短能长。春分(fèn )而登天(tiān ),秋(qiū )分而潜渊。”这些记述与商周青铜器上龙纹复杂多(duō )变的形象(xiàng )是相(xiàng )合(hé )的。
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