英文關鍵字
america
ancient
battle
boat
celtic
clouds
conquest
continent
dark
discover
dragon
england
europe
fighting
fleet
historical
history
island
land
lightnings
longboat
medieval
metal
nordic
north
northern
norway
ocean
rain
rainy
rowing
sail
sailboat
scandinavian
sea
seashore
shield
ship
shore
slowly
storm
vessel
viking
warrior
warship
water
wind
winter