英文關鍵字
afternoon
building
concrete
dramatic
electricity
energy
evening
facility
factory
gas
gases
generic
industrial
industry
infrastructure
metal
nuclear
oil
out
pipe
pipes
piping
plant
power
pressure
processing
pump
pumping
pumps
railings
refinery
release
silo
smoke
smokes
smoking
stairs
station
steam
steaming
steel
sunny
tube
tubes
ugly
urban
valve
valves
vapor
water