How to pronounce 七十 in Cantonese (1 out of 18):

通常只賣六十多七十而已
They usually sell only 60 or 70 of them.

Cantonese Sentence Breakdown

通常 tung1 soeng4
normally
zi2
only
merely
just
but
maai6
to sell
to betray
to spare no effort
to show off or flaunt; an alternative form for 鬻, sell
child
nourish
六十 luk6 sap6
sixty
do1
many
much
often
a lot of
numerous
more
in excess
how (to what extent)
multi-
Taiwan pr. [duó] when it means "how"
much better
plenty
exceed
demonstrably
七十 cat1 sap6
seventy
而已 ji4 ji5
That's it!