英文關鍵字
ice
block
glacier
crystal
winter
huge
icicles
cold
snowcapped
lump
clump
cob
clod
mammock
landscape
nature
frost
lake
baikal
water
fresh
glacial
travel
frozen
arctic
clear
snow
blocks
north
rocks
blue
melting
freeze
siberia
cool
natural
wild
discover
science
white
global
warming
crack
closeup
scandinavia
cliff
exploration
background
silent
smooth