ðɪ ɛnvˈaɪɹənmənt sˈɛnsɪŋ ɹᵻmˈeɪnz təbi ɐ lˈɑːɹdʒ ˈɪʃuː ðæt həznɑːt bˌɪn sˈɑːlvd ɪfˈɛktɪvli ɪnˈʌf tə tɹˈaɪ ænd aʊtdˈuː tˈɪpɪkəl ˈænɪməl bᵻhˈeɪvjɚɹ ɪn ɹˈʌf tɚɹˈeɪnz.
The environment sensing remains to be a large issue that has not been solved effectively enough to try and outdo typical animal behavior in rough terrains.