英文關鍵字
abstract
aid
assistance
blue
buoy
circle
closeup
danger
disaster
dramatic
emergency
equipment
float
help
life
lifebuoy
nature
object
ocean
orange
people
protect
protection
red
rescue
ring
risk
rope
round
rubber
safe
safety
save
saver
sea
security
service
ship
sos
storm
surface
survival
swim
water
wave
weather
wind