英文關鍵字
alert
background
beach
blue
building
caution
coast
coastal
coastline
danger
dangerous
day
europe
flag
flagpole
flagstock
fluttering
hazard
holiday
island
level
lifeguard
motion
nobody
object
ocean
orange
outside
palmas
pole
safety
sand
sea
seashore
seaside
shore
sign
sky
slow
slowed
summer
surf
swim
times
travel
vacation
warning
water
wave
white
wind
yellow