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

他是中央港澳工作領導小組組長
He is the head of the Central Hong Kong Working Group.

Cantonese Sentence Breakdown

to1
he or him
(used for either sex when the sex is unknown or unimportant)
(used before sb's name for emphasis)
(used as a meaningless mock object)
other
another
si6
is
中央 zung1 joeng1
central
港澳 gong2 ou3
Hong Kong and Macau
工作 gung1 zok3
work
領導 ling5 dou6
leadership
小組 siu2 zou2
small team
組長 zou2 zoeng2
team leader