Seventy is the number that is after sixty-nine and before seventy-one.
s ɛ v ə n t i WORD_BOUNDARY ɪ z WORD_BOUNDARY ð ə WORD_BOUNDARY n ʌ m b ə ɹ WORD_BOUNDARY ð æ t WORD_BOUNDARY ɪ z WORD_BOUNDARY æ f t ə ɹ WORD_BOUNDARY s ɪ k s t i n aɪ n WORD_BOUNDARY æ n d WORD_BOUNDARY b ɪ f ɔ ɹ WORD_BOUNDARY s ɛ v ə n t i w ʌ n WORD_BOUNDARY