英文關鍵字
adult
amazing
authentic
below
breath
caucasian
cold
crazy
december
deep
dipping
effort
emerges
endurance
exercise
extreme
face
freezing
frost
frostbite
frosty
head
healthy
hole
ice
icing
immersion
joy
lake
mad
male
man
plunge
ready
river
snow
strong
surface
swim
under
underwater
water
wave
white
winter
young