Definition

Examples

• 哈雷彗星每七十六年出现一次。
  Hā léi huì xīng měi qīshíliù nián chūxiàn yí cì.
  Halley's Comet appears once every 76 years.
• 科学家一直在研究哈雷彗星的轨道。
  Kēxuéjiā yìzhí zài yánjiū Hā léi huì xīng de guǐdào.
  Scientists have been studying the orbit of Halley's Comet.
• 很多人用望远镜观察哈雷彗星。
  Hěn duō rén yòng wàngyuǎnjìng guānchá Hā léi huì xīng.
  Many people observe Halley's Comet with telescopes.