英文關鍵字
airscrew
attack
back
base
bay
beach
big
black
blue
boat
clouds
coast
combat
currently
day
defense
extreme
fast
flags
flying
guard
gun
harbor
holiday
hovercraft
lake
landing
military
moored
motion
nature
naval
navy
nobody
outdoors
pier
propeller
protective
race
river
sailor
sea
ship
shock
sky
summer
travel
trip
water
winter