英文關鍵字
ecology
water
sky
nature
smoke
landscape
cloud
city
lake
fountain
steam
mist
rainbow
factory
travel
hot
power
building
pollution
sea
waterfall
fire
chemical
plant
environment
pipe
gas
toxic
industrial
英文關鍵字
ecology
water
sky
nature
smoke
landscape
cloud
city
lake
fountain
steam
mist
rainbow
factory
travel
hot
power
building
pollution
sea
waterfall
fire
chemical
plant
environment
pipe
gas
toxic
industrial