英语词汇“springing line”是什么意思，“springing line”的读音、用法及例句翻译-烛光网

词汇	springing line
释义	springing linen.（名词） A horizontal line between the springings of an arch.起拱线：拱形物起拱点之间的水平线
随便看	Spanish rice Spanish River Spanish Sahara spank spanked spanker spankers spanking spanking spanks spanned spanner spanners span-new spanning spanokopita spans call slip call to quarters call-up callus callused calluses callusing call waiting

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