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

如果离开广州太久观众可能对「磨碟沙」没有概念
If you're out of Guangzhou for too long, the audience may not have a clue about "Moreshash".

Cantonese Sentence Breakdown

如果 jyu4 gwo2
if
lei4
an alternative form for 離, to depart
hoei1
open
广 shop
broad
zau1
prefecture
(old) province
(old) administrative division
state (e.g. of US)
oblast (Russia)
canton (Switzerland)
continent
to settle in a place
place surrounded by water
taai3
(adjective) (of generations) 1. Great-grand; (noun)
Great-grand mother or father; (Reduplication) "太太" =
wife; 2. Mrs.
gau2
(long) time
(long) duration of time
old
gun1
watch
jung3
many
可能 ho2 nang4
(modal verb) can
deoi3
right
磨碟沙 mo4 dip6 saa1
emery paper
mou5
not
jau6
also
again
概念 koi3 nim6
concept