They are generally round but stretch longer along one axis than along the other.
总体上它们是圆的，但沿一根轴比另一根轴延伸得要更长一些。
One axis, three principles and five models construct a logic structure of analytical library science.
“一个轴心、三条原则、五种模型”形成分析图书馆学基础理论的逻辑结构。
One axis, three principles and five models construct a logic structure of analytical library science.
“一个轴心、三条原则、五种模型”形成分析图书馆学基础理论的逻辑结构。
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