英文關鍵字
expensive
design
business
travel
vacations
summer
morning
water
transport
transportation
sea
industrial
technology
landscape
construction
cross
marine
ocean
tourism
freight
cargo
carriage
landmark
famous
lock
navigation
crossing
sailing
nautical
vessel
sail
engineering
adventure
pacific
boat
entrance
pull
transit
Holidays
gateway
Trolley
waterway
watergate
Cruise Ship
Central America
cross over
gatun locks
Panama Canal
uniq