How to pronounce 外科手術 in Cantonese (3 out of 7):

外科手術口罩和N95效能差多少?
How much less effective are surgical masks and N95?

Cantonese Sentence Breakdown

外科手術 ngoi6 fo1 sau2 syut6
surgical operation
口罩 hau2 zaau1
mask
wo4
and
效能 haau6 nang4
(noun) Function
co1
alternative form for the word蹉,error
多少 do1 siu2
how much