1st & 2nd & 3rd & 4th & 5th All In One

1st & 2nd & 3rd & 4th & 5th All In One

English ordinal number

英语序数数字

1st === first
2nd === second
3rd === third
4th === fourth
5th === fifth

...

English 序数词缩写

1st / first
2nd / second
3rd / third ✅
4th / fourth
...

https://www.cnblogs.com/xgqfrms/p/14978781.html

基数和序数表

一个基数的是一个数字，说多少的东西也有，比如一，二，三，四，五。

一个序数是一个数字，告诉位置的东西在列表中，如第一，第二，第三，第四，第五等。

refs

数学乐 / mathsis fun

https://www.mathsisfun.com/numbers/cardinal-ordinal-chart.html

2nd Edition

https://www.amazon.com/Books-2nd-Edition/s?rh=n%3A283155%2Cp_27%3A2nd+Edition

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