How to pronounce 善於 in Cantonese (8 out of 9):

善於觀察時機嘅拉斯普京
But it's good to watch the time in Las Vegas.

Cantonese Sentence Breakdown

daan6
but
善於 sin6 jyu1
good at
觀察 gun1 caat3
observe
時機 si4 gei1
opportunity
koi3
indignant
generous
to sigh (with emotion)
laap6
jumbled
si1
(phonetic)
this
a surname
then
普京 pou2 ging1
Putin