英文關鍵字
42120
10102019
aerial
architecture
beautiful
blue
bridge
business
chemical
city
construction
contain
could
crossing
crude
ecuador
electricity
energy
engineering
equipment
factory
flowing
forest
fuel
gas
gasoline
generation
heat
industrial
industry
iron
landscape
metal
natural
nature
oil
outdoor
pipe
pipeline
pipes
piping
plant
pollution
power
production
quininde
rail
rain
refinery
river
sewer
shot
sky
steam
steel
supply
technology
that
top
transportation
tube
urban
viaduct
water