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

除咗因為佢地嘅數據唔會留底之外呢
Except for the fact that their data doesn't stay low.

Cantonese Sentence Breakdown

除咗 ceoi4 zo2
aside from; except for; unless
因為 jan1 wai6
due to
heoi5
he
she
it (Cantonese)
Mandarin equivalent: 他tā [他]
deng6
-ly
structural particle: used before a verb or adjective, linking it to preceding modifying adverbial adjunct
earth
soil
ground
region
the base of the coffin
koi3
indignant
generous
to sigh (with emotion)
數據 sou3 geoi3
data
唔會 m4 wui2
would not; not possible
留底 lau4 dai2
keep a record or backup
之外 zi1 ngoi6
besides
ni1
this