How to pronounce 退化 in Cantonese (3 out of 8):

而人類唔能夠發聲唔係智能上嘅退化
And the fact that we can't make a sound is not a degeneration of intelligence.

Cantonese Sentence Breakdown

nang4
an alternative form for 能,to be able
人類 jan4 leoi6
humanity
ng4
oh (expression of agreement or surprise)
(Cantonese) not
to hold in mouth
to bite
能夠 nang4 gau3
be able to
發聲 fat1 seng1
speak out
唔係 m4 hai6
(phrase
adverb
noun) no, not.
智能 zi3 nang4
intelligence
smart
soeng6
on top
upon
above
upper
previous
first (of multiple parts)
superior, highest
koi3
indignant
generous
to sigh (with emotion)
退化 teoi3 faa3
degenerate