How to pronounce 不得而知 in Cantonese (4 out of 7):

咁就不得而知
You don't have to know.

Cantonese Sentence Breakdown

gam3
so (Cantonese)
Mandarin equivalent: 这样zhèyàng [这样], like this
zau6
at once
right away
only
just (emphasis)
as early as
already
as soon as
then
in that case
as many as
even if
to approach
to move towards
to undertake
to engage in
to suffer
subjected to
to accomplish
to take advantage of
to go with (of foods)
with regard to
concerning
to yield oneself to
to compromise
will do
no other
to let
allow something be a certain way
according to
supposing
either…or
exactly
precisely
definitely
to accommodate
has
have been
to give in
不得而知 bat1 dak1 ji4 zi1
remains unknown
la5
“now”, with an connotation of doubt
surprise
disapproval