How to pronounce 差 in Cantonese (230 out of 464):

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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
和 wo4
and
效能 haau6 nang4
(noun) Function
差 co1
alternative form for the word蹉,error
多少 do1 siu2
how much
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