How to pronounce 純正 in Cantonese (4 out of 6):

配音係操一口標準而純正嘅普通話
The voicemail is a standard, pure Mandarin.

Cantonese Sentence Breakdown

配音 voiceover
dubbing
hai6
(Cantonese) to be
to connect
to relate to
to tie up
to bind
to be (literary)
to involve
relation
relationship
consequence
yes
indeed
right
cou3
conduct
behviour
integrity
一口 jat1 hau2
a mouthful
標準 biu1 zeon2
standard
nang4
an alternative form for 能,to be able
純正 seon4 zing3
genuine
koi3
indignant
generous
to sigh (with emotion)
普通話 pou2 tung1 waa2
Mandarin