我係用返現有所有法律制度
we are using all existing legal systems to

Cantonese Sentence Breakdown

我 ngo5
I
me
my
us
we
our
self
係 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
用返 jung6 faan1
use again
現有 jin6 jau5
currently have
所有 so2 jau5
every
法律 faat3 leot6
law
制度 zai3 dou6
system