1the frist floor, 2the second floor,3 the third floor,4 the fourth floor,5 the fifth floor,6 sixth, 7seventh, 8eighth, 9ninth, 10tenth, 11eleventh, 12twelfth,13 thirteenth, 14fourteenth, 15fifteenth, 16sixteenth, 17seventeenth, 18eighteenth, 19nineteenth, 20twentieth, 21twenty-first,22 twenty-second, 23twenty-third, 24twenty-fourth, 25 twenty-fifth. 这里是一至二十五,每个单词前面加the 后面加上floor,就是第几层楼了,第一个是例子,前五个都是完整的了.希望有帮到你:)
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