序数词
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英语1到20的序数词
1到20序数词依次是： first(1st) second(2nd) third(3rd) fourth(4th) fifth(5th) sixth(6th) ，seventh(7th)，eighth(8th) ninth(9th) tenth(10th)，eleventh(11th)，twelfth(12th)，thirteenth(13th)，fourteenth(14th)...
1到20序数词依次是： first(1st) second(2nd) third(3rd) fourth(4th) fifth(5th) sixth(6th) ，seventh(7th)，eighth(8th) ninth(9th) tenth(10th)，eleventh(11th)，twelfth(12th)，thirteenth(13th)，fourteenth(14th)...