to keep the cold air cold air inside
to keep the cold air cold air inside .
t ə WORD_BOUNDARY k iː p WORD_BOUNDARY ð ə WORD_BOUNDARY k oʊ l d WORD_BOUNDARY ɛ ɹ WORD_BOUNDARY k oʊ l d WORD_BOUNDARY ɛ ɹ WORD_BOUNDARY ɪ n s aɪ d WORD_BOUNDARY
t o WORD_BOUNDARY k e e p WORD_BOUNDARY t h e WORD_BOUNDARY c o l d WORD_BOUNDARY a i r WORD_BOUNDARY c o l d WORD_BOUNDARY a i r WORD_BOUNDARY i n s i d e WORD_BOUNDARY