英文關鍵字
aerial
architecture
barge
boat
bridge
canal
cargo
city
cross
dock
drawbridge
enter
entry
freight
harbor
holland
infrastructure
landscape
lift
light
narrow
open
pass
petersburg
port
river
road
route
russia
ship
summer
system
through
town
trade
traffic
transport
travel
typical
under
urban
video
water
waterway
white