to burn / to ignite / to light / fig. to spark off (hopes) / to start (debate) / to raise (hopes)
燃
=
火
+
然
:
Robinson Crusoe (r) is igniting (燃) a fire (火) in the anthill's kitchen (an2) hoping (燃) to cook his dinner there, but soon people come over and tell him it's not right (然) to do so because of the potential carbon monoxide poisoning.