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基数词序数词缩写意思(序）基数词序数词缩写意思(序）onefirst1st第一twenty-threetwenty-third23rd第二十三twosecond2nd第二twenty-fourtwenty-fourth24th第二十四threethird3rd第三twenty-fivetwenty-fifth25th第二十五fourfourth4th第四twenty-sixtwenty-sixth26th第二十六fivefifth5th第五twenty-seventwenty-seventh27th第二十七sixsixth6th第六twenty-eighttwenty-eighth28th第二十八sevenseventh7th第七twenty-ninetwenty-ninth29th第二十九eighteighth8th第八thirtythirtieth30th第三十nineninth9th第九fortyfortieth40th第四十tententh10th第十fiftyfiftieth50th第五十eleveneleventh11th第十一sixtysixtieth60th第六十twelvetwelfth12th第十二seventyseventieth70th第七十thirteenthirteenth13th第十三eightyeightieth80th第八十fourteenfourteenth14th第十四ninetyninetieth90th第九十fifteenfifteenth15th第十五onehundredonehundredth100th第一百sixteensixteenth16th第十六seventeenseventeenth17th第十七eighteeneighteenth18th第十八nineteennineteenth19th第十九twentytwentieth20th第二十twenty-onetwenty-first21st第二十一twenty-twotwenty-second22nd第二十二