英文關鍵字
active
activity
azores
blowing
boil
boiled
boiling
caldeira
caldeiras
caldera
crater
earth
erupting
eruption
evaporation
fumarole
fumaroles
furnas
geyser
grande
heat
island
lava
mediterranean
miguel
nature
portugal
smoke
springs
steam
suffer
suffers
thermal
village
volcanic
volcano
water