機器
boat lift
bridge
building
building exterior
built structure
canal lock
china
concrete
concrete wall
construction
fuel and power generation
gate
hill range
hubei province
human settlement
hydroelectric power station
industry
large
lift lock
man made structure
mountain
nautical structure
oversized
overweight
power station
reservoir
river
ship lift
sluice
stream
surrounding wall
three gorges
three gorges dam
transportation
watercourse
yangtze river
yiling district