How to pronounce 砰砰 in Cantonese (2 out of 3):

你嘅心臟或者會砰砰
Your heart might be beating.

Cantonese Sentence Breakdown

nei5
you (informal, as opposed to courteous 您nín [您])
can be used to refer to an unspecified person
koi3
indignant
generous
to sigh (with emotion)
心臟 sam1 zong6
mastermind
centre point
或者 waak6 ze2
or
wui6
a moment (Taiwan pr. for this sense is [huǐ])
metropolitan
gatherings union
to meet
to catch up
砰砰 paa4ng paa4ng
bang bang
tiu4
to jump
to hop
to skip over
to bounce
to palpitate
to leap
to vault
to dance
to throb
(heart) to beat
to make omissions
to give drugs to someone