英文關鍵字
aerial
america
archgravity
architecture
arizona
bridge
canyon
colorado
construction
dam
electric
engineering
grand
hoover
hydro
hydroelectric
industrial
infrastructure
lake
landmark
landscape
mead
natural
nature
nevada
outdoors
perspective
plant
power
reservoir
river
road
scene
scenic
station
tourism
traffic
transportation
travel
usa
view
water
waterpower