短語詞組短語inaccessible ordinal numbers [數(shù)]不可達序數(shù)Lesson TWO Ordinal Numbers 序數(shù)詞constructive ordinal numbers [數(shù)]可構(gòu)造序數(shù)space of ordinal numbers 序數(shù)空間Cardinal and ordinal numbers 基數(shù)詞和序數(shù)詞;基數(shù)和序數(shù)commutative ordinal numbers 交換序數(shù)Transfinite ordinal numbers 序數(shù)first transfinite ordinal numbers 第一超限序數(shù)Cardinal Numbers and Ordinal Numbers 基數(shù)詞和序數(shù)詞 返回 ordinal numbers