二叠纪二疊紀

Èr dié jì

释义

Permian (geological period 292-250m years ago)

在应用里学习 → 按笔顺书写

汉字

二èrtwo; twice一一叠diépile; layer; to fold up; to repeat, to duplicate叒冝纪jìdiscipline, age; period, era; record, annal纟己