第三紀

dìsānjì

the Tertiary Period

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di4 san1 ji4

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

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第三紀|第三纪 [dì sān jì] ► third period ► tertiary (geological era since the extinction of the dinosaurs at the Cretaceous-Tertiary boundary 65 million years ago)