Definition

Examples

• 本初子午线是零度经线。
  Běnchū zǐ wǔ xiàn shì líng dù jīngxiàn.
  The prime meridian is the zero-degree line of longitude.
• 航海时，船长用子午线来确定位置。
  Hánghǎi shí, chuánzhǎng yòng zǐ wǔ xiàn lái quèdìng wèizhì.
  When sailing, the captain uses meridians to determine position.
• 地理课上我们学了子午线和纬线。
  Dìlǐ kè shàng wǒmen xué le zǐ wǔ xiàn hé wěixiàn.
  In geography class we learned about meridians and parallels.