磁石 (cí shí) — lodestone, magnetite (naturally magnetic mineral)

定義

例文

• 这种磁石在古代就被用来制造指南针。
  Zhè zhǒng cí shí zài gǔ dài jiù bèi yòng lái zhì zào zhǐ nán zhēn.
  This kind of lodestone was used to make compasses in ancient times.
• 科学家发现了一块巨大的天然磁石。
  Kē xué jiā fā xiàn le yí kuài jù dà de tiān rán cí shí.
  Scientists discovered a huge piece of natural lodestone.
• 这块磁石的磁性很强。
  Zhè kuài cí shí de cí xìng hěn qiáng.
  This piece of magnetite has very strong magnetism.