kushinda = to overcome, surpass, win, beat kushindika = to be overcome/surpassed/beaten/won against; to apply force to kushindikana = to fail (eg. of efforts), to be unable to be done
Same question here: maybe Machieng can explain? And another question: since 'it' refers to an infinitive (kununua, word class XV) should the translation be Hakushindikani kununua simu hapa?