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 ɚ 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