虚线 (xū xiàn) — dotted line, dashed line; (mathematics) imaginary line

定義

例文

• 请沿着虚线剪开。
  Qǐng yán zhe xū xiàn jiǎn kāi.
  Please cut along the dotted line.
• 这条虚线代表辅助线。
  Zhè tiáo xū xiàn dài biǎo fǔ zhù xiàn.
  This dashed line represents an auxiliary line.
• 在几何中，虚线表示不可见的边界。
  Zài jǐ hé zhōng, xū xiàn biǎo shì bù kě jiàn de biān jiè.
  In geometry, an imaginary line represents an invisible boundary.