在英语中，1至15的基数词和序数词的缩写如下：
基数词缩写：
- 1st = first
- 2nd = second
- 3rd = third
- 4th = fourth
- 5th = fifth
- 6th = sixth
- 7th = seventh
- 8th = eighth
- 9th = ninth
- 10th = tenth
- 11th = eleventh
- 12th = twelfth
- 13th = thirteenth
- 14th = fourteenth
- 15th = fifteenth
序数词缩写：
- 1st = first
- 2nd = second
- 3rd = third
- 4th = fourth
- 5th = fifth
- 6th = sixth
- 7th = seventh
- 8th = eighth
- 9th = ninth
- 10th = tenth
- 11th = eleventh
- 12th = twelfth
- 13th = thirteenth
- 14th = fourteenth
- 15th = fifteenth
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