三叶虫 (sān yè chóng) — trilobite

定義

例文

• 博物馆里展出了几种不同的三叶虫化石。
  Bó wù guǎn lǐ zhǎn chū le jǐ zhǒng bù tóng de sān yè chóng huà shí.
  Several different types of trilobite fossils are on display at the museum.
• 科学家从三叶虫的化石中研究古海洋环境。
  Kē xué jiā cóng sān yè chóng de huà shí zhōng yán jiū gǔ hǎi yáng huán jìng.
  Scientists study ancient marine environments from trilobite fossils.
• 这块三叶虫化石保存得非常完整。
  Zhè kuài sān yè chóng huà shí bǎo cún dé fēi cháng wán zhěng.
  This trilobite fossil is very well preserved.