How to pronounce 洞穴 in Cantonese (5 out of 7):

洞穴能根據自然地形而分成若干區域
Caves can be divided into several areas based on their natural landscape.

Cantonese Sentence Breakdown

洞穴 dung6 jyut6
cave
toi4
name of a constellation
根據 gan1 geoi3
according to
自然 zi6 jin4
natural
地形 dei6 jing4
terrain
nang4
an alternative form for 能,to be able
分成 fan1 sing4
split into
若干 yeuk6 gon1
several
區域 keoi1 wik6
area