Definition

Examples

• 太阳发出的射线照在地球上。
  Tàiyáng fāchū de shè xiàn zhào zài dìqiú shàng.
  The rays from the sun shine on the earth.
• 医生用射线给病人做检查。
  Yīshēng yòng shè xiàn gěi bìngrén zuò jiǎnchá.
  The doctor uses rays to examine the patient.
• 数学里的射线从一点出发。
  Shùxué lǐ de shè xiàn cóng yì diǎn chūfā.
  A ray in math starts from a point.