优质解答
20 twenty 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 从20到30 from twenty to thirty
20 twenty 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 从20到30 from twenty to thirty