英文關鍵字
aid
assistance
background
beach
belt
blue
boat
buoy
circle
cruise
danger
device
emergency
equipment
float
guard
health
help
life
lifebelt
lifebuoy
lifeguard
lifesaver
marine
object
ocean
orange
preserver
protect
protection
red
rescue
ring
rope
round
safe
safety
save
saver
sea
security
ship
sos
support
survival
swim
travel
vacation
water
white