機器
agriculture
architecture
blue
building
canal
chamber
channel
concrete
control
countryside
cross
dam
energy
engineering
farm
field
flap
flood
floodgate
flow
flowing
gate
gdansk
irrigate
irrigation
landscape
level
line
lock
metal
motion
movement
nobody
old
open
processed
retro
river
ship
sluice
soil
station
stop
system
technology
transportation
water
wood