英文關鍵字
accident
amusement
aqua
attention
background
beware
blue
board
careful
caution
clean
danger
english
exterior
fall
floor
hazard
hotel
indoor
information
injury
message
notice
object
outdoor
park
plastic
pool
poolside
precaution
prevent
prevention
resort
risk
safety
sign
signal
slide
slip
slippery
summer
swimming
symbol
vacation
warning
water
wet
yellow