第三纪

第三纪
sān

third period

2 meanings
MEANING2 meanings

MEANING

  1. noun

    third period

    • The Tertiary is a period in geological time.

  2. noun

    tertiary (geological era since the extinction of the dinosaurs at the Cretaceous-Tertiary boundary 65 million years ago)

    • The Tertiary is a period in geological time.

STROKE ORDER
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解字

CHARACTER ANALYSIS

Ancient people used bamboo slips to mark order, like arranging siblings by rank and role.

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