at least two hours
at least two hour
prep n det:num n
at least two hours.
æ t WORD_BOUNDARY l iː s t WORD_BOUNDARY t uː WORD_BOUNDARY aʊ ə ɹ z WORD_BOUNDARY
a t WORD_BOUNDARY l e a s t WORD_BOUNDARY t w o WORD_BOUNDARY h o u r s . WORD_BOUNDARY