你好，很高兴为你解答:
21:twenty-one 22:twenty-two
23:twenty-three 24:twenty-four
25:twenty-five 26:twenty-six
27:twenty-seven 28:twenty-eight
29:twenty-nine 30:thirty『望采纳，谢谢』
21一29twenty-在后面加上one two three four five six seven eight nine
30 thirty
23~30用英文怎么写
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