英文關鍵字
buoy
sea
deep
water
security
ocean
swimming
limit
seascape
vacation
snorkeling
protection
marine
beach
anchor
coast
surf
summer
underwater
resort
float
safety
marker
maritime
beacon
sign
help
safe
warning
nautical
rescue
guard
signal
indicator
harbour
diving
stationary
navigational
coastline
surface
lagoon
boom
cork
danger
life
rope
fishing
lifebuoy