英文關鍵字
activity
alternative
attraction
bath
blue
body
care
change
clean
climate
ecology
electricity
energy
environmentally
friendly
geology
geothermal
green
health
heating
hot
hydro
hydrogen
iceland
icelandic
lagoon
lake
lava
mineral
natural
nature
pipe
pipeline
plant
pool
power
production
recreation
renewable
source
spring
station
steam
svartsengi