ðə ɹˈaɪn ɪz, haʊˈɛvɚ, dʒˈɛnɚɹəli kənsˈɪdɚd ðə mˈeɪn stɹˈiːm, bɪkˈʌz ɪɾ ɪz slˈaɪtli lˈɔŋɡɚ ðɐn ðɪ ˈɑːɹ.
The Rhine is, however, generally considered the main stream, because it is slightly longer than the Aare.