首頁›Browse›O›ordinal numberordinal number編輯正在努力提供更完整的內容，建議 20 分鐘後再回來看看ordinal numberordinal number — 名詞名詞1. a number that shows position in a sequence1.名詞釋義序數a number that shows position in a sequence例句First, second, and third are ordinal numbers.