How to pronounce 兩倍 in Cantonese (4 out of 6):

我們假設小朋友需要兩倍時間 即18分鐘
Let's say kids need twice as much time, or 18 minutes.

Cantonese Sentence Breakdown

我們 ngo5 mun4
we
假設 gaa2 cit3
hypothesis
小朋友 siu2 pang4 jau5
children
需要 seoi1 jiu3
need
兩倍 loeng5 bei6
twice
時間 si4 gaan3
time
zik1
namely
that is
i.e.
prompt
at once
at present
even if
prompted (by the occasion)
to approach
to come into contact
to assume (office)
to draw near
quickly
immediately
分鐘 fan1 zung1
minute