How to pronounce 雙元音 in Cantonese (2 out of 8):

這些雙元音絕大部分是由一個「i」以及一個「u」所組成。

Cantonese Sentence Breakdown

這些 ze2 se1
Some of these…
雙元音 soeng1 jyun4 jam1
diphthong
絕大部分 zyut3 daai6 bou6 bun6
majority
si6
is
jau4
to follow
from
it is for...to
reason
cause
because of
due to
to
to leave it (to sb)
by (introduces passive verb)
up to
through
a surname
一個 jat1 go3
a; one
以及 ji5 kap6
and
so2
actually
place
classifier for houses, small buildings, institutions etc
that which
particle introducing a relative clause or passive M: 个gè [个]
a building
a bureau
a station
an office
that which
all that
whatever
a unit
組成 zou2 sing4
(noun) Composition; (verb) 1. Compose of