Individual data items or records can be identified by a key or ordinal.
单个数据项或记录可用关键字和顺序号识别出来.
📖 牛津释义
ordinal
adj
(of a number) showing order or position in a series (指数字)序数的. > ordinal n (also ,ordinal `number)
`First', `second' and `third' are ordinals. 第一、 第二、 第三都是序数词. =>App 4 见附录4. Cf 参看 cardinal1.