英文關鍵字
aerial
barrage
barriers
blue
boat
bridge
canal
cars
cernavoda
channel
control
cruise
dam
danube
drone
ecluza
europe
flight
floating
flood
floodgate
flow
fly
gate
gates
gateway
helicopter
industrial
industry
lock
nautical
open
power
regulate
river
road
romania
ship
shipping
sky
sluice
sluicegate
technology
transport
transportation
travel
valve
water
waterway