How to pronounce 到嘔 in Cantonese (3 out of 4):

打教學關既怪都辛苦到嘔
Teaching is both weird and sickening.

Cantonese Sentence Breakdown

ding2
to take the lead
教學 gaau3 hok6
(adjective) Educational
gwaan1
mountain pass
to close
to shut
to turn off
to concern
to involve
a custom barrier
a check point
a mechanism
turning point
critical juncture
a wooden bolt for the door
a surname
to pick up or make money payments
gei3
already
gwaai3
weird
dou1
all
both
entirely
(used for emphasis) even
already
(not) at all
metropolis
capital
big city
the whole
elegant
refined
without exception
also
too
still
used in a sentence to add an inference or interrogative tone
辛苦 san1 fu2
hardworking
到嘔 dou3 au2
extremely [colloquial]