Noun:
-
the number designating place in an ordered sequence
- The ordinal number matching the number19 in a series.
第十九在数列中与数字19相配的序数词
- The ordinal number matching the number one trillion in a series.
第一万亿,第一兆可数数列中与一万亿相对应的序数
- The ordinal number matching the number15 in a series.
第十五在一系列中排在第十五的序数