| 单词 | 割线 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔secant〕A straight line intersecting a curve at two or more points.割线：连接两点或多点的横割某条曲线的直线美国传统〔secant〕The straight line drawn from the center through one end of a circular arc and intersecting the tangent to the other end of the arc.正割线：从圆心引出的经过圆弧一个端点并与另一端点正切交割的直线美国传统 |
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