A hot fire can destroy foil but, if you keep the cup filled with snow water, the fire's heat will be quickly conducted through the metal to the water and dissipated.
(A hot fire; can destroy; foil) (you; keep; the cup filled with snow water) (the cup; filled; with snow water) (the fire's heat; will be quickly conducted; ) (the fire's heat; dissipated; )
A hot fire you the cup the fire's heat the fire's heat
can destroy keep filled will be quickly conducted dissipated
foil
the cup filled with snow water
with snow water