Definition

Examples

• 他对天文学很感兴趣，经常看星星。
  Tā duì tiān wén xué hěn gǎn xìngqù, jīngcháng kàn xīngxing.
  He is very interested in astronomy and often looks at the stars.
• 天文学是一门研究宇宙的科学。
  tiān wén xué shì yì mén yánjiū yǔzhòu de kēxué.
  Astronomy is a science that studies the universe.
• 我大学时选修了天文学课程。
  Wǒ dàxué shí xuǎnxiū le tiān wén xué kèchéng.
  I took an astronomy course as an elective in college.