The unstressed word ending <ine> has three different pronunciations:
alpine Argentine assinine bovine **byzantine calamine canine *Caroline elephantine equine feline **florentine internecine labyrinthine Palestine porcupine saline saturnine serpentine supine turpentine uterine valentine vulpine
benzine bromine Cistine chlorine Christine dentine gasoline mezzanine morphine plasticine praline pristine quinine strychnine trampoline *vaccine wolverine
atropine bowline Catherine crinoline engine determine discipline heroine sanguine
In the lists above words marked with * can also be pronounced with ɪn and those marked with ** can also be pronounced with iːn.
There are a few words like endocrine which can have any of the three pronunciations.
This tip does not account for words ending <aine>, <eine> or <oine>, nor for words where the final syllable is stressed. None of the above lists is meant to be complete.