How to pronounce 芒草 in Cantonese (7 out of 8):

呢啲係芒草
These are herbs.

Cantonese Sentence Breakdown

呢啲 ni1 di1
(slang) these
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
芒草 mong5 cou2
lemongrass