How to pronounce 效用 in Cantonese (2 out of 3):

這是由最弱到最強防護效用的口罩分級 由最普通到有認證的
This is a category of masks that range from the weakest to the strongest protective mask, from the most common to the most certified.

Cantonese Sentence Breakdown

這是 ze5 si6
this is
jau4
to follow
from
it is for...to
reason
cause
because of
due to
to
to leave it (to sb)
by (introduces passive verb)
up to
through
a surname
zeoi3
most
the most
-est (superlative suffix)
exceedingly
extreme
joek6
weak
feeble
young
inferior
(following a decimal or fraction) slightly less than
to die off
dou3
to (a place)
until (a time)
up to
to go
to arrive
(verb complement denoting completion or result of an action)
been to
a particle used after a verb or adjective to indicate degree
extent
koeng5
to coerce
to force
to strive to
to try hard to
防護 fong4 wu6
protection
效用 haau6 jung6
effectiveness
dik1
of
~'s (possessive particle)
(used after an attribute)
(used to form a nominal expression)
(used at the end of a declarative sentence for emphasis)
truly
really
indeed
target
to lift up
few
small
to fetch
to move
to get
to pick up
to force
口罩 hau2 zaau1
mask
分級 fan1 kap1
classification
普通 pou2 tung1
ordinary
jau6
also
again
認證 jing6 zing3
certification