英文關鍵字
aggression
america
animation
armed
battle
battleship
blue
boat
cannon
clear
conflict
crime
destroyer
dock
domination
enforcement
forces
gray
gun
history
industrial
industry
large
law
marine
metal
military
nautical
naval
navy
ocean
pier
power
protection
radar
sea
ship
sky
steel
technology
texas
tower
transportation
vessel
virginia
war
warship
water
weapon