三叠纪三疊紀

Sān dié jì

释义

Triassic (geological period 250-205m years ago)

在应用里学习 → 按笔顺书写

汉字

三sānthree一二叠diépile; layer; to fold up; to repeat, to duplicate叒冝纪jìdiscipline, age; period, era; record, annal纟己