子午线 (zǐ wǔ xiàn) — meridian (geography)

Definition

Examples

• 本初子午线是零度经线。
  Běn chū zǐ wǔ xiàn shì líng dù jīng xiàn.
  The prime meridian is the zero-degree line of longitude.
• 航海时，船长用子午线来确定位置。
  Háng hǎi shí, chuán zhǎng yòng zǐ wǔ xiàn lái què dìng wèi zhì.
  When sailing, the captain uses meridians to determine position.
• 地理课上我们学了子午线和纬线。
  Dì lǐ kè shàng wǒ men xué le zǐ wǔ xiàn hé wěi xiàn.
  In geography class we learned about meridians and parallels.