英文關鍵字
abstract
aerology
air
all
annual
are
blue
cave
cloud
clouds
cold
crystals
drip
environment
flowers
form
frost
frozen
glacier
heaven
hydrodynamics
ice
icy
karst
light
longterm
nature
negative
observed
part
perennial
plane
pollution
round
science
similar
sky
smoke
snow
snowy
speleology
steam
stone
study
sun
temperatures
texture
thick
translucent
underground
walls
water
weather
white
winter
year
yearround
zone