お父さんかどうかは、足音で分かるんだよ。

Meaning
i can tell whether it's dad or not by the sound of his footsteps

Vocab used in this sentence

お父さん
dad, father, his father, my dad, my father, whose father, daddy
or, ka
どう
how
or, ka
a, the, is, am, are, will
足音
footsteps, footfall, tread
in, at, on, with, by, over, through
分かる
know, understand, i understand, realize, be understood, comprehend
i, n, m, ng, yin, hmm
is, be, are, am, it is, seems
the, yo, ll