How to pronounce 聲道 in Cantonese (3 out of 4):

聲道嘅進化 而同時人類嘅退化
The evolution of sound and the decline of humanity.

Cantonese Sentence Breakdown

聲道 sing1 dou6
vocal tract
koi3
indignant
generous
to sigh (with emotion)
進化 zeon3 faa3
to evolve
nang4
an alternative form for 能,to be able
同時 tung4 si4
at the same time
人類 jan4 leoi6
humanity
退化 teoi3 faa3
degenerate